CONTRACT OF SALE

                                                                   Exhibit 10.20

Date:    February       , 2002

Seller and Purchaser agree as follows:

Seller:  American BioMedica Corporation
         ------------------------------
Address: 122 Smith Road
         --------------
Kinderhook, NY 12106
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Purchaser: Robert L. Mink Jr.
           ------------------
Address: Valatie, New York 12184
         -----------------------

1.   Seller shall sell and Purchaser  shall buy the Property on the terms stated
     in this Contract.

2.   The Property is described as follows:

ALL that  certain  tract piece or parcel of land with the  improvements  thereon
situate,  lying and being in the Town of Stuyvesant,  Columbia County,  New York
shown on the map annexed hereto and consisting of 85.35 acres.

The sale includes:

       (a) All buildings and improvements on the Property

       (b) All right, title and interest, if any, of Seller in any land lying in
the bed of any street or highway,  opened or proposed,  in front of or adjoining
the Property to the center line thereof. It also includes any right of Seller to
any  unpaid  aware  to  which  Seller  may be  entitled  (1)  due to  taking  by
condemnation of any right, title or interest of Seller and (2) for any damage to
the  Property  due to change  of grade of any  street or  highway.  Seller  will
deliver to Purchaser at Closing,  or thereafter,  on demand,  proper instruments
for the  conveyance of title and the  assignment  and collection of the award or
damages.

       (c) All fixtures and articles of personal property attached to or used in
connection  with  the  Property,  unless  specifically  excluded  below.  Seller
represents that they are paid for and owned by Seller free and clear of any lien
other  than the  Existing  Mortgage(s).  They  include  but are not  limited  to
plumbing,  heating,  lighting and cooking  fixtures,  fire,  smoke,  and burglar
alarms, radio and television aerials,  blinds, shades,  screens,  awnings, storm
windows, window boxes, storm doors, mail boxes, weather vanes, flagpoles, pumps,
shrubbery, clothes washers, clothes dryers, garbage disposal units, wall to wall
carpeting and shed.

Excluded from the sale are:

      Furniture and household furnishings


3.    The purchase price is.........................................$ 150,000.00

      payable as follows:
      Initial Deposit...............................................$  15,000.00

      On the signing of this Contract by check subject to
      Collection held by............................................$

      By allowance for the principal amount still unpaid
      on the existing mortgage......................................$__,__.__

      By a Purchase Money Note and Mortgage from
      Purchaser (or assigns) to Seller:.............................$__,__.__

      BALANCE AT CLOSING............................................$135,000.00


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The  BALANCE  AT  CLOSING  shall  be paid in cash or good  certified  check,  or
official check of any bank,  savings bank,  trust  company,  or savings and loan
association  having a banking  office in the State of New York.  A check must be
payable to the order of Seller,  or to the order of Purchaser  and duly endorsed
by  Purchaser  (if  other  than a  corporation)  to the  order of  Seller in the
presence of Seller or Seller's attorney.

4.   The  Property  will  be  conveyed  subject  to the  continuing  lien of the
     following mortgage ("Existing Mortgage"):

     Mortgage now in the unpaid principal  amount of $............  and interest
     at the rate of _____% per year,  presently payable in  ....installments  of
     $............which  includes principal,  interest,  and with any balance of
     principal being due and payable on ____________.


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5.   If a purchase  money note and  mortgage is to be given it shall be drawn by
     the attorney for the Seller. Purchaser shall pay for the mortgage recording
     tax,  recording fees and the charge for drawing the note and mortgage.  The
     purchase  money note and  mortgage  shall  provide  that it will  always be
     subject to the prior lien of any Existing Mortgage even though the Existing
     Mortgage is extended, consolidated or refinanced in good faith.

6.   The Property is to be conveyed subject to:

     (a)  Applicable zoning and governmental regulations that affect the use and
          maintenance  of the  Property  provided  that they are not violated by
          buildings  and   improvements   on  the  Property.

     (b)  Conditions, agreements, restrictions and easements of record.

     (c)  Any state of facts and  inspection  or survey of the Property may show
          it does not make the title to the Property unmarketable.

     (d)  Existing tenancies.

     (e)  Unpaid assessments payable after the date of the transfer of title.

7.   Seller may pay and discharge any liens or encumbrances  not provided for in
     this  Contract.  Seller may make payment out of the balance of the Purchase
     paid by Purchaser on the transfer of title.

8.   At the Closing  Seller  shall  deliver to Purchaser a Bargain and Sale with
     Covenant  deed so as to convey a fee simple title to the Property  free and
     clear of all encumbrances except as stated in this Contract. The deed shall
     be prepared,  signed and  acknowledged by Seller and transfer tax stamps in
     the correct amount shall be affixed to the deed,  all at Seller's  expense.
     The deed shall contain a trust fund clause as required by Section 13 of the
     Lien Law.

9.   The following are to be apportioned pro-rata to the date of transfer:

     (a)  Rents as and when collected

     (b)  Interest on the Existing Mortgage

     (c)  Taxes,  water  rates and sewer  rates  based on the fiscal  period for
          which assessed.

     (d)  Premiums on existing  transferable  insurance policies and renewals on
          those expiring prior to closing.

     (e)  Fuel, if any.

10.  If there is a water meter on the  Property,  Seller shall furnish a reading
     to a date not more  than  thirty  days  prior  to the time  herein  set for
     Closing.  The  unfixed  meter  charge  and  sewer  rent,  if any,  shall be
     apportioned on the basis of this last reading.

11.  This  Contract  does not provide  for what  happens in the event of fire or
     casualty loss before the title closing.  Unless different provision is made
     in this Contract, Section 5-1311 of the General Obligations Law will apply.

12.  Purchaser has inspected the building and  improvements  on the Property and
     the personal property included in this sale. Purchaser agrees to take title
     "as is" and in  their  present  condition  subject  to  reasonable  use and
     natural deterioration between now and the time of closing.

13.  If  Seller is unable to  convey  title in  accordance  with this  Contract,
     Seller's  only  liability  is to refund  all money  paid on account of this
     Contract and pay charges made for examining title.

14.  The Closing will take place at the office of the Seller's attorney at 10:00
     AM on or before April 1, 2002

15.  Purchaser has not dealt with any broker in connection with this sale.

16.  All money paid on account of this Contract,  and the reasonable expenses of
     examination  of the title to the Property  and of any survey or  inspection
     charges are hereby made liens on the Property. The liens shall not continue
     after default by Purchaser.

17.  Any notice or other  communication  from one party to the other shall be in
     writing and sent by  registered  or certified  mail in a postpaid  envelope
     addressed  to the party at the  address  above.  The  address  above may be
     changed by notice to the other party.

18.  All prior  understandings  and agreements  between Seller and Purchaser are
     merged in this  Contract.  This Contract  completely  expresses  their full
     agreement and has been entered into after full investigation. Neither party
     is  relying  upon  statements  made by  anyone  that is not a party to this
     Contract.

19.  This Contract may not be changed or ended orally.

20.  This  Contract  shall  apply  to  and  bind  the  distributes,   executors,
     administrators, successors and assigns of the Seller and Purchaser.

21.  If there are more than one  Purchase  or Seller the words  "Purchaser"  and
     "Seller" used in this Contract includes them.

22.  See attached Rider.


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Seller and  Purchaser  have  signed  this  Contract as of the date at the top of
first page.

WITNESS                                                    SELLER

                                             American BioMedica Corporation
------------------------------------         ----------------------------------
                                             /s/ Stan Cipkowski
                                             ----------------------------------

                                                           PURCHASER

                                             /s/ Robert L. Mink Jr.
                                             ----------------------------------
                                             Robert L. Mink Jr.

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                  RIDER TO CONTRACT AMERICAN BIOMEDICA TO MINK

1.   The parties  hereto  agree that the  purchase  price shall be  allocated as
     follows:

     A.   For the purchase of the land $86,000 and;

     B.   For the purchase of the time on the land $64,000

2.   The parties  agree that the  contract  deposit of $15,000  shall be held in
     escrow by William J. Better, attorney for Seller.

3.   The  obligations of the Seller herein are contingent  upon and obtaining at
     its own  expense a variance  from the Town of  Stuyvesant  Zoning  Board of
     Appeals and a  sub-division  approval from the Town of Stuyvesant  Planning
     Board to convey the property  contemplated to be sole herein.  Seller shall
     use all due  diligence  to try and  effectuate  this  transfer  in a timely
     fashion.  Seller shall be responsible  for the costs  associated  with that
     transfer  except any costs  associated  with a percolation  test for septic
     suitability  for the location of a single family  residence on the contract
     premises. Such cost, if required or desired by the purchaser shall be borne
     by the purchaser solely.

4.   In addition to  conveying  the 83.35 acres  Seller shall convey an easement
     shown on the map annexed  hereto as Exhibit A. Seller shall be  responsible
     for all costs associated with the conveyance of that easement.

5.   The  transfer of title shall take place on or about April 1, 2002 or within
     30 days  after the  obtaining  of the  necessary  approvals  to convey  the
     property as herein contemplated.


                                             American BioMedica Corporation


                                             By:  /s/ Stan Cipkowski
                                                -------------------------------


                                                 /s/ Robert L. Mink Jr.
                                                -------------------------------
                                                Robert L. Mink Jr.


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