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                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                    FORM 10-Q

[X]  QUARTERLY REPORT UNDER SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT
     OF 1934

                  For the quarterly period ended MARCH 31, 2009

                                       or

[ ]  TRANSITION REPORT UNDER SECTION 13 OR 15(d) OF THE EXCHANGE ACT

             For the transition period from __________ to __________

                        Commission file number 000-51859

                       ELECTRONIC SENSOR TECHNOLOGY, INC.
             (Exact name of registrant as specified in its charter)

               NEVADA                                         98-0372780
  (State or other jurisdiction of                          (I.R.S. Employer
   incorporation or organization)                         Identification No.)

                           1077 Business Center Drive
                         Newbury Park, California 91320
                    (Address of principal executive offices)

                                 (805) 480-1994
                (Issuer's telephone number, including area code)

     Indicate by check mark whether the registrant (1) has filed all reports
required to be filed by Section 13 or 15(d) of the Securities Exchange Act of
1934 during the preceding 12 months (or for such shorter period that the
registrant was required to file such reports), and (2) has been subject to such
filing requirements for the past 90 days.                         Yes [X] No [ ]

     Indicate by check mark whether the registrant is a large accelerated filer,
an accelerated filer, a non-accelerated filer, or a smaller reporting company.
See the definitions of "large accelerated filer," "accelerated filer" and
"smaller reporting company" in Rule 12b-2 of the Exchange Act.

     Large accelerated filer [ ]                   Accelerated filer [ ]

     Non-accelerated filer [ ]                     Smaller reporting company [X]
     (Do not check if a smaller reporting company)

     Indicate by check mark whether the registrant is a shell company (as
defined in Rule 12b-2 of the Exchange Act).                       Yes [ ] No [X]

     Indicate the number of shares outstanding of each of the issuer's classes
of common stock, as of the latest practicable date.
              155,853,385 shares of common stock as of May 6, 2009

================================================================================

Certain statements in this quarterly report on Form 10-Q, including those
relating to the company's plans regarding business and product development;
product sales and distribution; market demands and developments in the homeland
security, analytical instrumentation/quality control and environmental
monitoring markets; and the sufficiency of the company's resources to satisfy
operation cash requirements are forward-looking statements within the meaning of
Section 27A of the Securities Act of 1933, as amended, and Section 21E of the
Securities Exchange Act of 1934, as amended. These forward-looking statements
may contain the words "believe," "anticipate," "expect," "predict," "estimate,"
"project," "will be," "will continue," "will likely result," or other similar
words and phrases. Risks and uncertainties exist that may cause results to
differ materially from those set forth in these forward-looking statements.
Factors that could cause the anticipated results to differ from those described
in the forward-looking statements include: risks related to changes in
technology, our dependence on key personnel, our ability to protect our
intellectual property rights, emergence of future competitors, changes in our
largest customer's business and government regulation of homeland security
companies. The forward-looking statements speak only as of the date they are
made. We do not undertake to update forward-looking statements to reflect
circumstances or events that occur after the date the forward-looking statements
are made.

                                     PART I.
                              FINANCIAL INFORMATION

Item 1. Financial Statements.

INDEX TO FINANCIAL STATEMENTS

Consolidated Balance Sheets as of March 31, 2009 (unaudited) and
 December 31, 2008 (audited)                                                 F-1

Consolidated Statements of Operations (unaudited) for the Three Months
 Ended March 31, 2009 and 2008                                               F-2

Consolidated Statements of Cash Flows (unaudited) for the Three Months
 Ended March 31, 2009 and 2008                                               F-3

Notes to Consolidated Financial Statements (unaudited)                       F-4

                                        1

                       ELECTRONIC SENSOR TECHNOLOGY, INC.
                           CONSOLIDATED BALANCE SHEETS
                                     ASSETS



                                                                                   March           December 31,
                                                                                  31, 2009            2008
                                                                              ---------------    ---------------
                                                                                (Unaudited)         (Audited)
                                                                                           
CURRENT ASSETS:
 Cash and cash equivalents                                                    $       203,062    $       484,028
 Certificate of deposit-restricted                                                     15,500             15,500
 Accounts receivable, net of allowance for uncollectible
  of $4,200 at March 31, 2009 and $0 at December 31, 2008                             296,702            284,644
 Prepaid expenses                                                                      74,705             59,219
 Inventories                                                                          474,223            557,454
                                                                              ---------------    ---------------
   TOTAL CURRENT ASSETS                                                             1,064,192          1,400,845
                                                                              ---------------    ---------------
PROPERTY AND EQUIPMENT, net                                                            98,700            114,213
SECURITY DEPOSITS                                                                      12,817             12,817
                                                                              ---------------    ---------------
                                                                              $     1,175,709    $     1,527,875
                                                                              ===============    ===============

                      LIABILITIES AND STOCKHOLDERS' EQUITY

CURRENT LIABILITIES
 Accounts payable and accrued expenses                                        $       481,314    $       352,369
 Obligation under capital lease due within one year                                    20,601             20,024
                                                                              ---------------    ---------------
   TOTAL CURRENT LIABILITIES                                                          501,915            372,393
                                                                              ---------------    ---------------
CONVERTIBLE DEBENTURES - long-term portion, net of unamortized discount             1,953,871          1,951,017
LONG-TERM OBLIGATION UNDER CAPITAL LEASE                                               11,211             16,583
                                                                              ---------------    ---------------
 TOTAL LIABILITIES                                                                  2,466,997          2,339,993
                                                                              ---------------    ---------------
STOCKHOLDERS' EQUITY
 Preferred stock, $.001 par value 50,000,000 shares authorized, none
  issued and outstanding                                                                    -                  -
 Common stock, $.001 par value 200,000,000 shares authorized, 155,853,385
  issued and outstanding at March 31, 2009 and December 31, 2008                      155,854            155,854
 Additional paid-in capital                                                        15,211,132         15,207,301
 Accumulated deficit                                                              (16,658,274)       (16,175,273)
                                                                              ---------------    ---------------
   TOTAL STOCKHOLDERS' EQUITY                                                        (812,118)        (1,291,288)
                                                                              ---------------    ---------------
                                                                              $     1,175,709    $     1,527,875
                                                                              ===============    ===============


            See unaudited notes to consolidated financial statements

                                       F-1

                       ELECTRONIC SENSOR TECHNOLOGY, INC.
                      CONSOLIDATED STATEMENTS OF OPERATIONS
                                   (Unaudited)

                                                      Three Months Ended
                                                           March 31,
                                                ------------------------------
                                                     2009             2008
                                                -------------    -------------
REVENUES                                        $     285,906    $     393,533
COST OF SALES                                         169,321          228,140
                                                -------------    -------------
 GROSS PROFIT                                         116,585          165,393
OPERATING EXPENSES:
 Research and development                             109,792          177,323
 Selling, general and administrative                  439,620          487,762
                                                -------------    -------------
  TOTAL OPERATING EXPENSES                            549,412          665,085
                                                -------------    -------------
LOSS FROM OPERATIONS                                 (432,827)        (499,692)
                                                -------------    -------------
OTHER INCOME (EXPENSE)
 Other income (expense) - derivative                        -          323,210
 Loss on sale of property and equipment                (1,121)               -
 Gain on extinguishment of debt                             -        1,261,864
 Interest (expense)                                   (49,055)        (734,269)
                                                -------------    -------------
  TOTAL OTHER INCOME (EXPENSE)                        (50,176)         850,805
                                                -------------    -------------
NET INCOME (LOSS)                               $    (483,003)   $     351,113
                                                =============    =============
 Earnings (loss) per share, basic               $        0.00    $        0.01
                                                =============    =============
 Weighted average number of shares, basic         155,853,385       61,579,041
                                                =============    =============
 Loss per share, diluted                        $        0.00    $        0.00
                                                =============    =============
 Weighted average number of shares, diluted       155,853,385       63,387,932
                                                =============    =============

            See unaudited notes to consolidated financial statements

                                       F-2

                       ELECTRONIC SENSOR TECHNOLOGY, INC.
                      CONSOLIDATED STATEMENTS OF CASH FLOWS
                                   (Unaudited)



                                                                     Three Months Ended
                                                                          March 31,
                                                                  --------------------------
                                                                     2009          2008
                                                                  -----------    -----------
                                                                           
CASH FLOWS FROM OPERATING ACTIVITIES:
 Net income (loss)                                                $  (483,003)   $   351,113
  Adjustments to reconcile net loss to net
   cash provided by (used in) operating activities:
    Depreciation and amortization                                      10,741         13,112
    Increase in allowance for doubtful accounts                         4,200              -
    Issuance of shares for payment of interest                              -        280,000
    Stock based compensation                                            3,831         13,101
    Amortization of debt discount                                       2,854        583,428
    Amortization of deferred financing costs                                -         45,387
    Gain on extinguishment of debt                                          -     (1,261,864)
    Decrease in fair value of derivative liability                          -       (323,210)
   Changes in assets and liabilities:
    Accounts receivable                                               (16,258)        59,765
    Inventories                                                        83,231         66,975
    Prepaid expenses                                                  (15,487)       (11,410)
    Accounts payable and accrued expenses                             128,948         (5,745)
    Deferred revenues                                                       -        (12,500)
                                                                  -----------    -----------
   Net cash provided by (used in) operating activities               (280,943)      (201,848)
                                                                  -----------    -----------
CASH FLOWS FROM INVESTING ACTIVITIES:
    Proceeds from sale of property and equipment                        4,772          9,036
                                                                  -----------    -----------
 Net cash provided by investing activities                              4,772          9,036
                                                                  -----------    -----------
CASH FLOWS FROM FINANCING ACTIVITIES:
    Decrease in capital lease obligation                               (4,795)        (4,280)
    Proceeds from issuance of 9% convertible debentures                     -      2,000,000
    Proceeds from issuance of  equity                                       -      3,500,000
    Repayment of 8% convertible debentures                                  -     (3,500,000)
                                                                  -----------    -----------
    Net cash provided by (used in) financing activities                (4,795)     1,995,720
                                                                  -----------    -----------
NET INCREASE (DECREASE) IN CASH                                      (280,966)     1,802,908
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD                      484,028        248,587
                                                                  -----------    -----------
CASH AND CASH EQUIVALENTS AT END OF PERIOD                        $   203,062    $ 2,051,495
                                                                  -----------    -----------

SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION
 Cash paid during the period for interest                         $     1,279    $     1,817
                                                                  -----------    -----------
NONCASH FINANCING AND INVESTING ACTIVITY:
 Reclassification of derivative liability to paid-in-capital      $         -    $ 2,053,333
                                                                  -----------    -----------
    Conversion of 8% convertible debentures into equity           $         -    $   500,000
                                                                  -----------    -----------
    Debt discount related to 9% convertible debentures            $         -    $    57,613
                                                                  ===========    ===========


            See unaudited notes to consolidated financial statements.

                                       F-3

                       ELECTRONIC SENSOR TECHNOLOGY, INC.
                   Notes to Consolidated Financial Statements
                                   (Unaudited)
                                 March 31, 2009

1)   Basis of Presentation

     The accompanying unaudited consolidated financial statements have been
     prepared in accordance with generally accepted accounting principles for
     interim financial statements and with the instructions to Form 10-Q and
     Item 10 of Regulation S-K. Accordingly, they do not include all the
     information and disclosures required for annual financial statements. These
     financial statements should be read in conjunction with the consolidated
     financial statements and related footnotes for the year ended December 31,
     2008, included in the Annual Report filed on Form 10-K for the year then
     ended.

     In the opinion of the management of Electronic Sensor Technology, Inc. (the
     "Company"), all adjustments (consisting of normal recurring accruals)
     necessary to present fairly the Company's financial position as of March
     31, 2009, and the results of operations and cash flows for the three month
     period ending March 31, 2009 have been included. The results of operations
     for the three month period ended March 31, 2009 are not necessarily
     indicative of the results to be expected for the full year. For further
     information, refer to the consolidated financial statements and footnotes
     thereto included in the Company's Annual Report filed on Form 10-K as filed
     with the Securities and Exchange Commission for the year ended December 31,
     2008.

2)   Basis of Consolidation

     The accompanying financial statements include the accounts of the Company
     and its wholly owned subsidiaries. All intercompany balances and
     transactions have been eliminated in consolidation.

3)   Nature of Business and Summary of Significant Accounting Policies

     a)   Nature of Business

          The Company develops and manufactures electronic devices used for
          vapor analysis. It markets its products through distribution channels
          in over 20 countries.

     b)   Cash and Cash Equivalents

          The Company considers highly liquid financial instruments with
          maturities of three months or less at the time of purchase to be cash
          equivalents.

     c)   Certificate of Deposit - Restricted

          The Company had two certificates of deposit in place at March 31,
          2009. One, in the amount of $12,000, was used to secure and
          collateralize the Company's credit card liability. The other
          certificate of deposit in the amount of $3,500 was used to provide a
          performance guarantee for a sale to an oversea customer.

     d)   Allowance for Doubtful Accounts

          The allowance for doubtful accounts is based on the Company's
          assessment of the collectability of customer accounts and the aging of
          the accounts receivable. If there is a deterioration of a major
          customer's credit worthiness or actual defaults are higher than the
          Company's historical experience, the Company's estimates of the
          recoverability of amounts due it could be adversely affected. The
          Company regularly reviews the adequacy of the Company's allowance for
          doubtful accounts through identification of specific receivables where
          it is expected that payments will not

                                       F-4

          be received. The Company also establishes an unallocated reserve that
          is applied to all amounts that are not specifically identified. In
          determining specific receivables where collections may not be
          received, the Company reviews past due receivables and gives
          consideration to prior collection history and changes in the
          customer's overall business condition. The allowance for doubtful
          accounts reflects the Company's best estimate as of the reporting
          dates. Changes may occur in the future, which may require the Company
          to reassess the collectability of amounts and at which time the
          Company may need to provide additional allowances in excess of that
          currently provided.

     e)   Revenue Recognition

          The Company records revenue from direct sales of products to end-users
          when the products are shipped, collection of the purchase price is
          probable and the Company has no significant further obligations to the
          customer. Costs of remaining insignificant Company obligations, if
          any, are accrued as costs of revenue at the time of revenue
          recognition. Cash payments received in advance of product shipment or
          service revenue are recorded as deferred revenue.

     f)   Shipping and Handling

          The Company accounts for shipping and handling costs as a component of
          "Cost of Sales".

     g)   Inventories

          Inventories are comprised of raw materials, work in process, and
          finished goods. Inventories are stated at the lower of cost or market
          and are determined using the first-in, first-out method.

     h)   Property and Equipment

          Property and equipment are stated at cost, net of accumulated
          depreciation. Depreciation is computed using the straight-line method
          over the estimated useful lives of five years.

     i)   Research and Development

          Research and development costs are charged to operations as incurred
          and consists primarily of salaries and related benefits, raw materials
          and supplies.

     j)   Use of Estimates

          The preparation of the financial statements in conformity with
          generally accepted accounting principles requires management to make
          estimates and assumptions that affect the reported amounts of assets
          and liabilities and disclosures of contingent assets and liabilities
          at the date of the financial statements and the recorded amounts of
          revenues and expenses during the reporting period. Actual results
          could differ from those estimates.

     k)   Fair Value of Financial Instruments

          The fair value of certain financial instruments, including accounts
          receivable, accounts payable and accrued liabilities, approximate
          their carrying values due to the short maturity of these instruments.
          The fair value as of March 31, 2009 of the 9% convertible debentures
          issued by the Company on March 28, 2008 amounts to $2,000,000, based
          on the Company's incremental borrowing rate.

     l)   Long-lived Assets

          The Company reviews long-lived assets, such as property and equipment,
          to be held and used or disposed of, for impairment whenever events or
          changes in circumstances indicate that the

                                       F-5

          carrying amount of an asset may not be recoverable. If the sum of the
          expected cash flows, undiscounted and without interest, is less than
          the carrying amount of the asset, an impairment loss is recognized as
          the amount by which the carrying amount of the asset exceeds its fair
          value. At March 31, 2009 no assets were impaired.

     m)   Capital Lease

          On June 28, 2007, the Company entered into a capital lease under which
          the present value of the minimum lease payments amounted to $59,200.
          The present value of the minimum lease payments was calculated using a
          discount rate of 11.41%. The principal balance of the capital lease
          obligation amounted to approximately $31,800 at March 31, 2009,
          including approximately $20,600 in the current portion of capital
          lease obligations in the accompanying consolidated balance sheet.

     n)   Basic and Diluted Earnings Per Share

          Basic earnings per share are calculated by dividing income available
          to stockholders by the weighted-average number of common shares
          outstanding during each period. Diluted earnings per share are
          computed by dividing income available to stockholders, adjusted for
          interest savings on the convertible debenture and changes in income or
          loss associated with the derivative contract that would result if the
          contract had been recorded as an equity instrument for accounting
          purposes during the period, by the weighted average number of common
          shares outstanding during the period plus the net effect of stock
          options and warrants, effect of the convertible debentures, and
          embedded conversion features.

          The outstanding options, warrants and shares equivalent issuable
          pursuant to embedded conversion features and warrants at March 31,
          2009 and 2008 are excluded from the loss per share computation for
          that period due to their antidilutive effect.

          The following sets forth the computation of basic and diluted earnings
          per share at March 31:



                                                                    2009            2008
                                                               -------------   -------------
                                                                         
          Numerator:
            Net income (loss)                                  $    (483,003)  $     351,113
            Net other (income)/expense associated with
             derivative contracts                                          -        (323,210)
              Interest expense in convertible debentures                   -           1,081
                                                               -------------   -------------
            Net income (loss) for diluted earnings per share
             purposes                                          $    (483,003)  $      28,984
                                                               =============   =============

          Denominator:
            Denominator for basic earnings per share-
              Weighted average shares outstanding                155,853,385      61,579,041
            Effect of dilutive stock options and warrants,
             determined under the treasury stock method                    -               -
            Assume issued common shares for convertible
             debentures, determined under the if-converted
             method                                                        -       1,808,891
                                                               -------------   -------------
            Denominator for diluted earnings per share-
              Weighted average shares outstanding                155,853,385      63,387,932
                                                               =============   =============

          Basic earnings (loss) per share                      $        0.00   $        0.01
                                                               =============   =============
          Diluted earnings (loss) per share                    $        0.00   $        0.00
                                                               =============   =============


                                       F-6


     o)   Stock Based Compensation

          The Company adopted SFAS No. 123R, "Share Based Payments." SFAS No.
          123R requires companies to expense the value of employee stock options
          and similar awards and applies to all outstanding and vested
          stock-based awards.

          In computing the impact, the fair value of each option is estimated on
          the date of grant based on the Black-Scholes options-pricing model
          utilizing certain assumptions for a risk free interest rate;
          volatility; and expected remaining lives of the awards. The
          assumptions used in calculating the fair value of share-based payment
          awards represent management's best estimates, but these estimates
          involve inherent uncertainties and the application of management
          judgment. As a result, if factors change and the Company uses
          different assumptions, the Company's stock-based compensation expense
          could be materially different in the future. In addition, the Company
          is required to estimate the expected forfeiture rate and only
          recognize expense for those shares expected to vest. In estimating the
          Company's forfeiture rate, the Company analyzed its historical
          forfeiture rate, the remaining lives of unvested options, and the
          amount of vested options as a percentage of total options outstanding.
          If the Company's actual forfeiture rate is materially different from
          its estimate, or if the Company reevaluates the forfeiture rate in the
          future, the stock-based compensation expense could be significantly
          different from what we have recorded in the current period. The impact
          of applying SFAS No. 123R approximated $3,800 in additional
          compensation expense during for the three month period ended March 31,
          2009. Such amount is included in general and administrative expenses
          on the statement of operations.

     p)   Risk Factors

          Recently, the credit markets and the financial services industry have
          been experiencing a period of unprecedented turmoil and upheaval
          characterized by the bankruptcy, failure, collapse or sale of various
          financial institutions and an unprecedented level of intervention from
          the United States federal government. While the ultimate outcome of
          these events cannot be predicted, they may have a material adverse
          effect on the Company's liquidity and financial condition if its
          ability to borrow money to finance its operations from its existing
          lenders or from other sources, or obtain credit from trade creditors
          were to be impaired. In addition, the recent economic crisis could
          also adversely impact our customers' ability to finance the purchase
          of electronic instruments from us or our suppliers' ability to provide
          us with product, either of which may negatively impact the Company's
          business and results of operations.

          Concentration of Credit Risks

          The Company is subject to concentrations of credit risk primarily from
          cash and cash equivalents. The Company's cash and cash equivalents
          accounts are held at financial institutions and are insured by the
          Federal Deposit Insurance Corporation ("FDIC") up to $250,000 at March
          31, 2009. During the three-month periods ended March 31, 2009 and
          2008, the Company has reached bank balances exceeding the FDIC
          insurance limit. While the Company periodically evaluates the credit
          quality of the financial institutions in which it holds deposits, it
          cannot reasonably alleviate the risk associated with the sudden
          failure of such financial institutions.

          Customer Concentration

          The Company's largest customer accounted for approximately 42% and 31%
          of its revenues during the three-month periods ended March 31, 2009
          and 2008, respectively. The customer accounted for approximately 40%
          and 55% of the gross accounts receivable balance at March 31, 2009 and
          2008, respectively.

                                       F-7

          Product Concentration

          All of the Company's revenues were derived from the sale of electronic
          devices and related accessories used for vapor analysis.

          Geographic Concentration

          The Company sells its products internationally in 20 countries. Sales
          to these countries were approximately 56% and 54% of net revenues
          during the three-month periods ended March 31, 2009 and 2008,
          respectively.

     q)   Recently Issued Accounting Pronouncements

          FASB 161 - Disclosures about Derivative Instruments and Hedging
          Activities

          In March 2008, the FASB issued FASB Statement No. 161, which amends
          and expands the disclosure requirements of FASB Statement No. 133 with
          the intent to provide users of financial statements with an enhanced
          understanding of; how and why an entity uses derivative instruments,
          how the derivative instruments and the related hedged items are
          accounted for and how the related hedged items affect an entity's
          financial position, performance and cash flows. This Statement is
          effective for financial statements for fiscal years and interim
          periods beginning after November 15, 2008. Management believes this
          Statement will have no impact on the financial statements of the
          Company once adopted.

          FASB 161 - The Hierarchy of Generally Accepted Accounting Principles

          In May 2008, the Financial Accounting Standards Board (FASB) issued
          Statement of Financial Accounting Standards (SFAS) No. 162, "The
          Hierarchy of Generally Accepted Accounting Principles." The new
          standard is intended to improve financial reporting by identifying a
          consistent framework, or hierarchy, for selecting accounting
          principles to be used in preparing financial statements that are
          presented in conformity with U.S. generally accepted accounting
          principles (GAAP) for non-governmental entities. We are currently
          evaluating the effects, if any, that SFAS No. 162 may have on our
          financial reporting.

4)   Convertible debentures

     9% Convertible Debentures

     On March 28, 2008, we received $2,000,000 from an investor in exchange for
     a convertible debenture bearing an interest rate of 9%, payable
     semi-annually in cash. The convertible debenture has a five (5)-year term,
     and the conversion rate of the debenture is $0.0486 (equal to 41,152,263
     common shares). The difference between the conversion rate of the debenture
     and the closing price of the Company's common stock on the date of issuance
     resulted in a note discount of approximately $58,000. The note discount
     will be amortized over the term of the convertible debenture.

5)   Stockholders' Equity

     Options

     In 2005, the Board of Directors adopted the Electronic Sensor Technology,
     Inc. 2005 Stock Incentive Plan. The purpose of the Stock Incentive Plan is
     to attract and retain the services of experienced and knowledgeable
     individuals to serve as our employees, consultants and directors. On the
     date the Stock Incentive Plan was adopted, the total number of shares of
     common stock subject to it was 5,000,000. The Stock Incentive Plan is
     currently administered by the Board of Directors, and may be administered
     by any

                                       F-8

     Committee authorized by the Board of Directors, so long as any such
     Committee is made up of Non-Employee Directors, as that term is defined in
     Rule 16(b)-3(b) of the Securities Exchange Act of 1934.

     The Stock Incentive Plan is divided into two separate equity programs: the
     Discretionary Option Grant Program and the Stock Issuance Program. Under
     the Discretionary Option Grant Program, eligible persons may, at the
     discretion of the administrator, be granted options to purchase shares of
     common stock and stock appreciation rights. Under the Stock Issuance
     Program, eligible persons may, at the discretion of the administrator, be
     issued shares of common stock directly, either through the immediate
     purchase of such shares or as a bonus for services rendered for Electronic
     Sensor Technology (or a parent or subsidiary of Electronic Sensor
     Technology).

     Pursuant to the terms of the Discretionary Option Grant Program, the
     exercise price per share is fixed by the administrator, but may not be less
     than 85% of the fair market value of the common stock on the date of grant,
     unless the recipient of a grant owns 10% or more of Electronic Sensor
     Technology's common stock, in which case the exercise price of the option
     must not be less than 110% of the fair market value. An option grant may be
     subject to vesting conditions. Options may be exercised in cash, with
     shares of the common stock of Electronic Sensor Technology already owned by
     the person or through a special sale and remittance procedure, provided
     that all applicable laws relating to the regulation and sale of securities
     have been complied with. This special sale and remittance procedure
     involves the optionee concurrently providing irrevocable written
     instructions to: (i) a designated brokerage firm to effect the immediate
     sale of the purchased shares and remit to Electronic Sensor Technology, out
     of the sale proceeds available on the settlement date, sufficient funds to
     cover the aggregate exercise price payable for the purchased shares plus
     all applicable federal, state and local income and employment taxes
     required to be withheld by Electronic Sensor Technology by reason of such
     exercise and (ii) Electronic Sensor Technology to deliver the certificates
     for the purchased shares directly to such brokerage firm in order to
     complete the sale. The term of an option granted pursuant to the
     Discretionary Option Grant Program may not be more than 10 years.

     The Discretionary Option Grant Program also allows for the granting of
     Incentive Options to purchase common stock, which may only be granted to
     employees, and are subject to certain dollar limitations. Any options
     granted under the Discretionary Option Grant Program that are not Incentive
     Options are considered Non-Statutory Options and are governed by the
     aforementioned terms. The exercise price of an Incentive Option must be no
     less than 100% of the fair market value of the common stock on the date of
     grant, unless the recipient of an award owns 10% or more of Electronic
     Sensor Technology's common stock, in which case the exercise price of an
     incentive stock option must not be less than 110% of the fair market value.
     The term of an Incentive Option granted may not be more than five years if
     the option is granted to a recipient who owns 10% or more of Electronic
     Sensor Technology's common stock, or 10 years for all other recipients of
     Incentive Options. Incentive Options are otherwise governed by the general
     terms of the Discretionary Option Grant Program.

     Pursuant to the terms of the Stock Issuance Program, the purchase price per
     share of common stock issued is fixed by the administrator, but may not be
     less than 85% of the fair market value of the common stock on the issuance
     date, unless the recipient of a such common stock owns 10% or more of
     Electronic Sensor Technology's common stock, in which case the purchase
     price must not be less than 100% of the fair market value. Common stock may
     be issued in exchange for cash or past services rendered to Electronic
     Sensor Technology (or any parent or subsidiary of Electronic Sensor
     Technology). Common stock issued may be fully and immediately vested upon
     issuance or may vest in one or more installments, at the discretion of the
     administrator.

     Management used Black Scholes methodology to determine the fair value of
     the options on the date of issue based on the following assumptions. The
     expected volatility was based on the average historical volatility of
     comparable publicly-traded companies.

                                              2009            2008
                                         -------------   -------------
               Exercise price            $0.02 - $0.24   $0.19 - $0.24

                                       F-9

                                              2009            2008
                                         -------------   -------------
               Market value              $0.02 - $0.24   $0.19 - $0.24
               Expected dividend yield        0%               0%
               Expected volatility         36% - 47%       36% - 39%
               Risk free interest rate   3.81% - 4.54%   4.03% - 4.54%
               Expected life of option      5 years         5 years

     The fair value of the granted stock options shares was approximately
     $0.03 per share. Approximately $13,000 and $4,000 were charged
     to compensation for the quarters ended March 31, 2008 and 2009,
     respectively. The remaining amount will be amortized to compensation
     expense over future periods based on the vesting schedule of the respective
     stock option shares. The total compensation cost related to nonvested
     awards not yet recognized amounted to approximately $33,000 at March 31,
     2009. This compensation cost will be recognized over the weighted average
     period of the remaining terms of the stock options, unless the options are
     terminated sooner.

     The following tables summarize all stock option grants to employees and
     non-employees as of March 31, 2009:

                                                               Weighted
                                               Number of        Average
     Stock Options                              Options     Exercise Price
     --------------------------------------   -----------   --------------
     Balance at December 31, 2007               3,437,950   $         0.41
     Granted                                    2,000,000   $         0.03
     Exercised                                          -   $            -
     Forfeited                                 (2,291,050)  $         0.37
                                              -----------   --------------
     Balance at December 31, 2008               3,146,900   $         0.19
     Granted                                            -   $            -
     Exercised                                          -   $            -
     Forfeited                                   (150,000)  $         0.24
                                              -----------   --------------
     Balance at March 31, 2009                  2,996,900   $         0.18
                                              ===========   ==============
     Options exercisable at March 31, 2009        813,200   $         0.56
                                              ===========   ==============
     Weighted average fair value of options
      granted during 2009                               -   $            -
                                              ===========   ==============

     A summary of the status of the Company's nonvested shares as of March 31,
     2009, and changes during the fiscal period then ended as presented below.

                                                               Weighted
                                                             Average Grant
     Nonvested Shares                           Shares      Date Fair Value
     --------------------------------------   -----------   ---------------
     Nonvested at December 31, 2007             1,598,200   $          0.09
       Granted                                  2,000,000   $          0.03
       Vested                                    (191,850)  $          0.24
       Cancelled                               (1,158,300)  $          0.21
                                              -----------   ---------------
     Nonvested at December 31, 2008             2,248,050   $          0.09
       Granted                                          -   $             -
       Vested                                     (64,350)  $          0.24
       Cancelled                                        -                 -
                                              -----------   ---------------
     Nonvested at March 31, 2009                2,183,700   $          0.04
                                              ===========   ===============

                                      F-10

            Options Outstanding                    Options Exercisable
-----------------------------------------------   ----------------------
                          Weighted
              Number       Average     Weighted      Number     Weighted
           Outstanding    Remaining     Average   Exercisable    Average
Exercise   as of March   Contractual   Exercise   at March 31,  Exercise
Price        31, 2009       Years        Price       2009        Price
--------   -----------   -----------   --------   -----------   --------
$   0.02     1,000,000          9.65   $   0.02             -   $      -
$   0.03     1,000,000          9.32   $   0.03             -   $      -
$   0.19       161,500          7.93   $   0.19       161,500   $   0.19
$   0.24       482,400          7.79   $   0.24       298,700   $   0.24
$   1.00       353,000          5.84   $   1.00       353,000   $   1.00
           -----------   -----------   --------   -----------   --------
             2,996,900          8.70   $   0.18       813,200   $   0.56
           ===========   ===========   ========   ===========   ========

     Warrants

          The following table summarizes the warrants outstanding at March 31,
          2009:



                                    Number of
                       Expiration   Shares of
          Issue Date      Date     Common Stock    Price    Basis for Warrant Issuance
          ----------   ---------   ------------   -------   --------------------------
                                                
          03/09/05      03/08/10        200,000      2.40   Media consulting services
          05/09/05      05/08/10         75,000      2.40   Media consulting services
          08/09/05      08/08/10         75,000      2.40   Media consulting services
          12/07/05      12/06/10        485,213    0.4761   Investment advisor
          12/07/05      12/06/10      2,166,128      0.43   Convertible debenture
          12/07/05      12/06/10      3,899,030      0.43   Convertible debenture
                                   ------------
                                      6,900,371  Outstanding at March 31, 2009
                                   ============


6)   Subsequent Events

     On April 10, 2009, the Company received $1 million from an investor in
     exchange for a debenture bearing an interest rate of 9% with a maturity of
     one year. The debenture grants the investor a security interest in all of
     the intellectual property of the Company.

                                      F-11

Item 2. Management's Discussion and Analysis or Plan of Operation.

You should read the following discussion and analysis of our financial condition
and results of operations together with our interim financial statements and the
related notes appearing at the beginning of this report. The interim financial
statements and this Management's Discussion and Analysis of Financial Condition
and Results of Operations should be read in conjunction with the financial
statements and notes thereto for the year ended December 31, 2008 and the
related Management's Discussion and Analysis of Financial Condition and Results
of Operations, both of which are contained in our Annual Report on Form 10-K
filed with the Securities and Exchange Commission.

--------------------------------------------------------------------------------

Overview

The company is engaged in the development, manufacturing, and sales of a
patented product called zNose(R); a device designed to detect and analyze
chemical odors and vapors, or, in other words, an electronic "nose." We believe
the zNose(R) is superior to other electronic "noses" because of its speed,
specificity and sensitivity. The zNose(R) is capable of measuring and
quantifying the chemistry of any compound, fragrance, vapor or odor with parts
per trillion sensitivity in 10 seconds. We also believe the zNose(R) has the
unique ability to quantify and speciate the subject chemical vapor by creating
visual olfactory images. This enables the measured odor or vapor to be easily
identified by the user.

We believe that our products will have broad applications in the homeland
security, analytical instrumentation/quality control, and environmental
monitoring and detection markets. The company is involved in ongoing product
research and development efforts in that regard. The company has also
concentrated its efforts on further product development, testing and proving and
continuing to expand our sales and support organization.

The company was originally incorporated under the laws of the state of Nevada as
"Bluestone Ventures, Inc." on July 12, 2000. From inception until February 1,
2005, we engaged in the business of acquiring, exploring and developing certain
mining properties in Ontario, Canada. Upon acquisition of Electronic Sensor
Technology, L.P. ("ELP"), we abandoned our mining business and adopted ELP's
business of developing, manufacturing and selling the vapor analysis device. On
January 26, 2005, we changed our name to "Electronic Sensor Technology, Inc."

Our executive offices are located at 1077 Business Center Circle, Newbury Park,
California 91320 and our telephone number is (805) 480-1994.

Critical Accounting Policies

The company records revenue from direct sales of products to end-users when the
products are shipped, collection of the purchase price is probable and the
company has no significant further obligations to the customer. Costs of
remaining insignificant company obligations, if any, are accrued as costs of
revenue at the time of revenue recognition. Cash payments received in advance of
product shipment or service revenue are recorded as deferred revenue.

The preparation of the financial statements in conformity with generally
accepted accounting principles requires management to make estimates and
assumptions that affect the reported amounts of assets and liabilities and
disclosures of contingent assets and liabilities at the date of the financial
statements and the recorded amounts of revenues and expenses during the
reporting period. Actual results could differ from those estimates.

The company reviews long-lived assets, such as property and equipment, to be
held and used or disposed of, for impairment whenever events or changes in
circumstances indicate that the carrying amount of an asset may not be
recoverable. If the sum of the expected cash flows, undiscounted and without
interest, is less than the carrying amount of the asset, an impairment loss is
recognized as the amount by which the carrying amount of the asset exceeds its
fair value. At March 31, 2009 no assets were impaired.

                                        2

Plan of Operations

Over the course of the next 12 months, we intend to execute our business plan
and focus our business development efforts in the following key areas:

     o    By diversifying our product offerings to enhance the usefulness of our
          solutions for customers who will have already adopted one or more
          products;

     o    By enhancing our product lines and developing new products to attract
          new customers; and

     o    By developing partnering relationships with wide-ranging sales and
          distribution channel leaders already serving our vertical market space
          in a way that assists them in developing new revenue streams and
          opportunities through improved technical and sales support and
          customer services.

Results of Operations

The following table sets forth, as a percentage of revenues, certain items
included in the company's Income Statements (see Financial Statements and Notes)
for the periods indicated:

                                                         Three Months Ended
                                                               March 31
                                                    --------------------------
     Statement of Operations Data:                      2009           2008
     --------------------------------------------   ------------   -----------
     Revenues....................................            100%          100%
     Cost of Sales...............................             59%           58%
     Gross Profit................................             41%           42%
     Operating Expenses..........................            192%          169%
     (Loss) From Operations......................           (151%)        (127%)
     Other Income (Expense)......................            (18%)         216%
     Net (Loss)..................................           (169%)          89%

Three Months Ended March 31, 2009 Compared to Three Months Ended March 31, 2008

Revenues are derived from product sales and product support services. For the
three months ending March 31, 2009, revenues were $285,900 which was $107,600
less than for the same period in 2008. Although the same number of units was
shipped as in 2008, revenues were lowered due to an averaged 24%
across-the-board price reduction on all of our instruments. The price reductions
were necessitated by the impact of current global economic conditions on the
durable capital equipment market. Revenues were also negatively impacted by a
significant (91%) drop in sales support revenues due to most of the quarter's
sales were to international customers whose post-sales support requirements are
handled by their respective sales representative or distributor. Also impacting
revenues was the company's license agreement with a customer which ended in
October 2008 and was not renewed. The license agreement provided $12,500 in
quarterly royalty income for the company.

The company anticipates the stresses of current global economic conditions on
the commercial durable equipment market to continue. These conditions have
caused many of our customers to postpone their purchases of capital equipment.
Until global economic conditions improve, we expect the commercial durable
equipment market to remain stagnant.

During the quarter, we introduced our latest product, the Model 4500, to the
homeland security market. The Model 4500 is a mobile unit that is based on our
proprietary core technologies which provide accurate analysis on a real time
basis. We are optimistic that this product will be enthusiastically received by
homeland security customers.

Cost of Sales consist of product costs and expenses associated with product
support services. For the three-month period ending March 31, cost of sales was
$169,000 versus $228,000 in 2008. On a percentage of revenues basis, cost of
sales were approximately the same for both years, 59% versus 58% for 2009 and
2008, respectively. It

                                        3

should be noted that the 2009 cost of sales percentage was negatively impacted
by the across-the-board price decreases on our instrument product line which
offset cost improvements on our products.

Gross profit was $116,600 or 41% of sales for the three months ending March 31,
2009, compared to $165,400 or 42% of sales for the same period in 2008. Gross
profit was negatively impact by the across-the-board price reduction on our
instruments. The price reductions had a negative impact on gross profit of
approximately 9 percentage points.

Research and Development costs for the three months ending March 31, 2009 were
$110,000 versus $177,000 for the same period in 2008. The $67,000 improvement is
attributed to lower personnel expenses due to reduction of census ($67,000),
lower operating expenses ($9,000), offset by higher facilities expenses.

Selling, General and Administrative expenses for the three months ending March
31, 2009 were $440,000, compared to $488,000 for the same period in 2008. The
$48,000 improvement in spending resulted from a decrease in personnel expenses
due to a reduction in census ($56,000), reduction in operating expenses
($66,000), offset by increases in the use of outside services ($14,000), and
facilities expenses ($60,000).

Interest expense for the three months ending March 31, 2009 was $49,000, as
compared to $734,000 for the same period in 2008. In 2009, interest expense
pertains mostly to the interest accrued on the $2.0 million 9% convertible
debenture issued on March 28, 2008. 2008 interest expense included both interest
accrued on the $7.0 million 8% convertible debentures as well as amortization of
the related debt discount. The 8% convertible debenture was retired on March 28,
2008.

Other income-derivatives. There was no income from derivatives in 2009. Such
income from derivatives in 2008 resulted primarily from the decrease in the fair
value of derivative liabilities between the measurement dates which are the
balance sheet dates. On March 31, 2008, we satisfied our obligations under the
8% convertible debentures and as a result, the company asserted that it has a
sufficient amount of authorized and unissued shares to settle its obligations
which can be settled in shares. Accordingly, the company reclassified all
contracts, warrants, and other convertible instruments outstanding at March 31,
2008 from liability to equity.

Gain on extinguishment of debt. In 2008, a gain was realized from the early
retirement of the 8% convertible debentures on March 31, 2008. There were no
debt retirements in the first three months of 2009.

Liquidity and Capital Resources

For the three months ending March 31, net cash used by the company for operating
activities were $281,000 and $201,800 for 2009 and 2008 respectively. Cash used
for the three months ending March 31, 2009 was comprised of the net loss for the
period of $483,000, plus net non-cash items (including depreciation and
amortization expenses of $10,700, increase in allowance for doubtful accounts of
$4,200, stock based compensation of $3,800, and amortization of debt discount of
$2,900) of $21,600, and plus the net change in operating assets and liabilities
of $180,400. Cash used in operations during the same three months of 2008 was
comprised of the net income for the period of $351,100, less net non-cash
expenses (including depreciation and amortization expenses of $13,100, stock
based compensation of $13,100, issuance of common shares for payment of interest
of $280,000, amortization of debt discount of $583,400, amortization of deferred
financing costs of $45,400, less decrease in fair value of derivative liability
of $323,200, and gain on early retirement of debt of $1,261,800) of $650,000,
and plus the net change in operating assets and liabilities of $97,100.

Investing activities provided cash for the three-month period ended March 31,
were $4,800 and $9,000 for 2009 and 2008, respectively. In both years, the cash
provided were from the sale of property and equipment.

Financing activities for the first three months of 2009 used cash of $4,800
which resulted from a decrease in capital lease obligation. For the same period
in 2008, financing activities provided cash of $1,995,700 which included
$2,000,000 received from the issuance of 9% convertible debentures to an
investor, $3,500,000 from the issuance of equity to the same investor, less
$3,500,000 used to retire the 8% convertible debentures and a decrease in
capital lease obligation of $4,300.

                                        4

On March 31, 2009 the company's cash (including cash equivalents) was $203,100,
compared to $2,051,500 on March 31, 2008. On April 10, 2009, the company
received $1,000,000 from an investor in exchange for a debenture (see Note 6).
The company had working capitals of $562,300 and $2,567,200 on March 31, 2009
and 2008, respectively.

Seasonality and Quarterly Results

We have not experienced and do not foresee any seasonality to our revenues or
our results of operations.

Inflation

Although we currently use a limited number of sources for most of the supplies
and services that we use in the manufacturing of our vapor detection and
analysis technology, our raw materials and finished products are sourced from
cost-competitive industries. While prices for our raw materials may vary
significantly based on market trends, we have not experienced and do not foresee
any material inflationary trends for our product sources.

Off-Balance Sheet Arrangements

We do not have any off-balance sheet arrangements.

Item 3. Quantitative and Qualitative Disclosures About Market Risk.

This Item is not applicable to smaller reporting companies.

Item 4T. Controls and Procedures.

The company's Chief Executive Officer and Chief Financial Officer, after
evaluating the effectiveness of the company's disclosure controls and procedures
(as defined in Rules 13a-15(e) under the Securities Exchange Act of 1934, as
amended) as of the end of the period covered by this quarterly report on Form
10-Q, have concluded that, based on such evaluation, the company's disclosure
controls and procedures were effective to ensure that material information
relating to the company is recorded, processed, summarized, and reported in a
timely matter. In designing and evaluating the disclosure controls and
procedures, the company's management recognized that any controls and
procedures, no matter how well designed and operated, can provide only
reasonable assurance of achieving the desired control objectives, and the
company's management necessarily was required to apply its judgment in
evaluating the cost-benefit relationship of possible controls and procedures.

There were no changes in the company's internal control over financial reporting
that occurred during the period covered by this quarterly report that have
materially affected, or are reasonably likely to materially affect, the
company's internal control over financial reporting.

                                        5

                                    PART II.
                                OTHER INFORMATION

Item 1. Legal Proceedings.

We are not a party to any pending material legal proceedings and are not aware
of any threatened or contemplated proceeding by any governmental authority
against us.

Item 1A. Risk Factors.

This Item is not applicable to smaller reporting companies.

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds.

We did not sell any unregistered equity securities or repurchase any of our
equity securities during the three months ended March 31, 2009.

Item 3. Defaults Upon Senior Securities.

During the three months ended March 31, 2009, there were no material defaults
upon senior securities.

Item 4. Submission of Matters to a Vote of Security Holders.

None.

Item 5. Other Information.

None.

Item 6. Exhibits.

Exhibit
   No.    Description
-------   ----------------------------------------------------------------------
31.1      Certification of Chief Executive Officer Pursuant to Section 302 of
          the Sarbanes-Oxley Act.
31.2      Certification of Principal Financial and Accounting Officer Pursuant
          to Section 302 of the Sarbanes-Oxley Act.
32.1      Certification of Chief Executive Officer Pursuant to Section 906 of
          the Sarbanes-Oxley Act.
32.2      Certification of Principal Financial and Accounting Officer Pursuant
          to Section 906 of the Sarbanes-Oxley Act.

                                        6

                                   SIGNATURES

In accordance with the requirements of the Exchange Act, the registrant caused
this report to be signed on its behalf by the undersigned, thereunto duly
authorized.

                                ELECTRONIC SENSOR TECHNOLOGY, INC.


Dated:  May 14, 2009            By: /s/ Teong Lim
                                    --------------------------------------------
                                    Name:  Teong Lim
                                    Title: President and Chief Executive Officer
                                           (Principal Executive Officer)


Dated:  May  14, 2009           By: /s/ Philip Yee
                                    --------------------------------------------
                                    Name:  Philip Yee
                                    Title: Secretary, Treasurer and Chief
                                           Financial Officer
                                           (Principal Financial and Accounting
                                           Officer)