SECURITIES PURCHASE AGREEMENT

EDITEK, Inc.
1238 Anthony Road
Burlington, North Carolina 27215

Re:   Private Offering Of Common Stock

Gentlemen:

In connection with the offer (the  "Offering")  and proposed  issuance of shares
("Common  Shares")  of  common  stock  of  EDITEK,  Inc.  (the  "Company"),  the
undersigned  prospective  investor ("the Investor") and the Company hereby agree
as follows:

1.    Subscription.  The  Investor  hereby  subscribes  for the  purchase of the
      Common Shares and agrees to purchase the aggregate number of Common Shares
      set forth on the signature  page of this  Agreement.  The Company,  in its
      sole discretion and for any reason,  may accept or reject this purchase in
      whole or in part at any time not later than 10 days after  receipt of this
      Agreement.

2.    Listing  of  Shares.  The  Company  agrees  to make any  required  listing
      application  with the American Stock Exchange to qualify the Common Shares
      for trading on the AMEX and use its best efforts to effect such listing.

3.    Payment Of Purchase Price. The Investor shall pay for the Common Shares by
      either wire  transfer of funds to the Company at a time  designated by the
      Company  (the  "Closing").  The number of Common  Shares  issuable  to the
      Investor  shall be equal to the  aggregate  purchase  price of the  Common
      Shares divided by the purchase price per share of the Common Shares,  less
      any fractional  shares.  The aggregate purchase price of the Common Shares
      shall  be  $600,002.25  less an  amount  corresponding  to any  fractional
      shares.  The purchase  price per share of the Common Shares shall be equal
      to Seventy Five  Percent  (75%) of the Market Price of the common stock of
      the Company.  The "Market  Price" as used in this  Section  shall mean the
      average of the closing  prices of the  Company's  Common Stock on the five
      (5) trading  days  immediately  prior to February 1, 1996 as quoted in The
      Wall Street Journal.
                                                                        
      The  Company  undertakes  to deliver  certificates  for the Common  Shares
      within five (5) business days following Closing.

4.    Company's  Conditions.  The  Company's  obligation  to issue  and sell the
      Common  Shares shall be subject to the  satisfaction  (or waiver by it) of
      the following conditions precedent:

      a)   Performance.  The Investor shall have tendered payment for the Common
           Stock.







      b)   Representations.   Each  representation  and  warranty  made  by  the
           Investor in this Agreement  shall be true and correct in all material
           respects as though made on and as of the Closing Date.

      c)   Legality.  No  change  shall  have  occurred  in  any  law,  rule  or
           regulation  that would prohibit the  consummation  of any transaction
           contemplated hereby.

      d)   Litigation.  No action,  proceeding or investigation  shall have been
           instituted or threatened nor shall any order, judgment or decree have
           been  issued or be  proposed  to be issued  by any  court,  agency or
           authority to set aside, restrain,  enjoin or prevent the consummation
           of any transaction contemplated hereby.

5.    Representations  and Warranties.  The Investor makes the  representations,
      declarations and warranties set forth in this Section with the intent that
      the same may be relied upon in determining the Investor's suitability as a
      purchaser of the Common  Shares.  If the Investor  includes or consists of
      more than one person or entity,  the  obligations of the Investor shall be
      joint and several and the  representations and warranties herein contained
      shall be deemed  to be made by and be  binding  upon  each such  person or
      entity and their respective heirs, executors,  administrators,  successors
      and assigns.

      a)   No  Regulatory  Review.  The Investor is aware that this is a limited
           private offering and that no federal,  state or other agency has made
           any finding or determination as to the fairness of the investment nor
           made any recommendation or endorsement of the Common Shares.

      b)   Ability  to  Evaluate.  The  Investor,  by reason  of the  Investor's
           knowledge  and  experience  in  financial  and business  matters,  is
           capable of  evaluating  the risks and merits of an  investment in the
           Common Shares.

      c)   Investment  Intent.  The Investor  acknowledges  that the purchase of
           Common Shares hereunder is being made for the Investor's own account,
           for  investment  purposes only and not with the present  intention of
           distributing for reselling the Common Shares in whole or in part. The
           Investor  further  understands  that the Common  Shares are not being
           sold to the Investor in a transaction registered under the Securities
           Act,  or  any  state  securities  laws.  As a  result,  the  Investor
           understands  that there will be restrictions on the transfer and sale
           of  the  Common  Shares.  Investor  hereby  agrees  to  exercise  the
           registration  rights  granted  hereby,  and to sell the Common Shares
           pursuant  to such  registration,  in a  manner  consistent  with  the
           representations  and  warranties  made  by  Investor  to the  Company
           hereunder.  Investor  understands  that the SEC may in its discretion
           comment on  certain  aspects of the  Registration  Statement  and the
           transaction   and  that  such   comments   may  cause  delay  in  the
           Registration Statement becoming effective.  The Company shall have no
           liability to Investor on account of any delays initiated by the SEC.

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      d)   Investment  Information.  The  Investor  has  received  and  reviewed
           pertinent  information  regarding  the  Company,  including  the most
           recent  SEC Forms  10-K and 1O-Q  filed by the  Company  prior to the
           execution  of this  Agreement  and is  capable of  understanding  and
           evaluating  the  information  contained  therein.  Specifically,  the
           Investor is fully aware of the risks  relating to the business of the
           Company and purchase of the Common  Shares.  The  Investor  will rely
           solely upon his independent  investigation and analysis in making the
           decision to purchase the Common Shares.  In  particular,  and without
           limiting the generality of the foregoing, the Investor has not relied
           on, and the  Investor's  decision to subscribe  for Common Shares has
           not been  influenced  by:  (i)  newspaper,  magazine  or other  media
           articles  or reports  related to the  Company or its  business;  (ii)
           promotional  literature  or other  materials  used by the Company for
           sales or  marketing  purposes,  or (iii)  any other  written  or oral
           statement  of the  Company or persons  purporting  to  represent  the
           Company.  The Investor has had the opportunity to discuss all aspects
           of this transaction  with management of the Company,  has made or has
           had the  opportunity to make such inspection of the books and records
           of the Company as the  Investor has deemed  necessary  in  connection
           with this  investment,  and any questions asked have been answered to
           the satisfaction of the Investor.

      e)   Confidentiality.  The  Investor  understands  that  the  Offering  is
           confidential.  The Investor has not  distributed  information  on the
           Offering to anyone other than such legal or financial advisors as the
           Investor  has  deemed   necessary   for  purposes  of  evaluating  an
           investment in the Common Shares.

      f)   Authorization  and  Formation  of  Investor.   The  Investor,   if  a
           corporation,  partnership, trust or other form of business entity, is
           authorized  and  otherwise  duly  qualified  to purchase and hold the
           Common  Shares and such entity has not been  formed for the  specific
           purposes of acquiring Common Shares in the Offering.  If the Investor
           is one of the  aforementioned  entities,  it hereby  agrees that upon
           request of the Company it will supply the Company with any additional
           written information that may be requested by the Company.

      g)   Accredited Investor Status. The Investor is an "accredited  investor"
           as such term is defined in Rule 501(a) of  Regulation D under the Act
           and within the meaning of similar  regulations under state securities
           laws. If the Investor is an individual, he or she is of majority age.
           If the Investor is an entity,  the person  executing this  Securities
           Purchase Agreement on behalf of the Investor is of majority age.

6.    Reliance  on  Representations  and  Warranties:  Indemnity.  The  Investor
      understands  that  the  Company  will  rely  on  the  representations  and
      warranties  of the Investor  herein in  determining  whether a sale of the
      Common Shares to the Investor is in compliance with federal and applicable
      state securities laws. The Investor hereby agrees to indemnify the Company
      and its  affiliates,  and hold the Company and its  affiliates  and agents
      harmless from and against any and all liability,  damage,  cost or expense
      (including  reasonable  attorneys' fees) incurred on account of or arising
      out of: (a) any inaccuracy in the Investor's

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      declarations,  representations and warranties set forth in this Agreement;
      (b) the  disposition  of any of the Common  Shares which the Investor will
      receive,  contrary to the  Investor's  declarations,  representations  and
      warranties in this Agreement;  (c) any lawsuit or proceeding  based upon a
      claim  that  said   declarations,   representations   or  warranties  were
      inaccurate  or  misleading  or otherwise  cause for  obtaining  damages or
      redress from the Company or any of its  affiliates or the  disposition  of
      all or any part of the  Investor's  Common  Shares and (d) the  Investor's
      failure to fulfill any or all of the Investor's obligations herein.

7.    Updating Information. All of the information set forth herein with respect
      to the Investor, including, without limitation, all of the representations
      and  warranties  set forth in Section 5, is correct and complete as of the
      date  hereof  and,  if  there  should  be  any  material  change  in  such
      information  prior to the acceptance of this  subscription by the Company,
      the Investor will immediately furnish the revised or corrected information
      to the Company.

8.    Notices.  Any  notice  or  other  communications   required  or  permitted
      hereunder shall be sufficiently given if in writing and sent by registered
      or certified mail, postage prepaid,  return receipt  requested,  if to the
      Company at the address set forth on the first page of this Agreement,  and
      to Investor,  at the address set forth following the Investor's  signature
      to this Agreement,  or, to such other address as either the Company or the
      Investor  shall  designate to the other by notice in writing in accordance
      with this Section 9.

9.    Governing  Law.  This  Agreement  shall be  governed by and  construed  in
      accordance with the laws of North Carolina.

10.   Representations and Warranties of the Company.  The Company represents and
      warrants to Investor as follows:

      a)   The Company has legal capacity, power and authority to enter into and
           perform this Agreement and to consummate the transaction contemplated
           hereby.

      b)   This  Agreement has been duly  authorized,  executed and delivered by
           the Company and constitutes a legal,  valid and binding obligation of
           the Company,  enforceable  against the Company in accordance with its
           terms.

      c)   The execution and delivery of this  Agreement and the  performance of
           the obligations  imposed  hereunder will not result in a violation of
           any order,  decree or  judgment of any court or  governmental  agency
           having  jurisdiction  over the Company or the  Company's  properties,
           will not conflict with,  constitute a default under, or result in the
           breach of, any contract,  agreement or other  instrument to which the
           Company  is  a  party  or  is   otherwise   bound  and  no   consent,
           authorization or order of, or filing or registration  with, any court
           or  governmental  agency is required for the execution,  delivery and
           performance of this Agreement.


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      d)   There is no litigation  or proceeding  pending or, to the best of the
           Company's knowledge, threatened, against the Company which would have
           a material effect on the validity or performance of this Agreement.

      e)   Upon  consummation  of  the  transaction   contemplated  hereby,  the
           Investor  will own the  Common  Shares  free and clear of all  liens,
           rights,  claims,  charges and other  encumbrances and the delivery of
           the Shares to the Investor  pursuant to this  Agreement will transfer
           legal and valid title thereto,  free and clear of all liens,  rights,
           claims, charges and other encumbrances.

      f)   The Company  will pay all  transfer  fees and  expenses,  except such
           expenses of registration as are described in the Registration  Rights
           Agreement executed pursuant to Section 2 hereof.

      g)   The  Common  Shares,  when  issued  and  delivered,  will be duly and
           validly  authorized and issued,  and when paid for by the Investor in
           accordance  with this Agreement will be fully-paid and  nonassessable
           and will not  subject the holders  thereof to personal  liability  by
           reason of being such holders.  There are no preemptive  rights of any
           shareholder of the Company.

      h)   The Company hereby agrees to indemnify and hold harmless the Investor
           from and against any liability, damage, cost or expense incurred as a
           result of breach by the  Company of any  representation,  warranty or
           covenant of the Company hereunder.

                      [THIS SPACE INTENTIONALLY LEFT BLANK]



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11.   Signatures. The Investor declares that the statements, representations and
      warranties  contained herein are true,  correct and complete and that this
      Agreement was executed at:


         St. Paul                             Minnesota
         (City)                               (State)

Number of Common Shares                    235,295  @ $ 2.55  Per Share
Total Purchase Price                $      (less amount for fractional shares)
                                    $  600,002.25

Exact Name(s) in which ownership
of Common Shares is to be registered:        Harry G. McCoy, Jr.

Address:      402 West Country Road D
City, State, Zip Code:   St. Paul, MN  55112

Subscriber                                  Joint Subscriber (if necessary)

  Harry G. McCoy, Jr.
(Print Name)                        (Print Name)

 /s/ Harry G. McCoy, Jr.
(Signature)                                 (Signature)

- ------------------------                    -------------------------
(Title)                                     (Title)

Date:    1/31/96                            Date: ____________________

RECEIVED AND ACCEPTED AT __________________________, North Carolina:
                               (City)
Amount: $
Date:

EDITEK, Inc.

By:      /s/  James D. Skinner

Its:       President and CEO

*        To be determined by dividing aggregate purchase price by the purchase 
         price per share calculated under Section 4.
**       Purchase price per share calculated under Section 4.



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