HEADS OF AGREEMENT DATED                                                    1999

BETWEEN        ELAST TECHNOLOGIES INC., OF
               ("ETI")

AND            RIVERPLATE  SECURITIES PTY LTD ACN 002 992 690, of
               or its nominee ("Riverplate")

1.   The purpose of this Heads of Agreement  ("HoA") is to set out the principal
     aspects  of an  investment  which  Riverplate  intends to make in ETI and a
     license which ETI intends to grant to a nominee of Riverplate,  intended to
     be  established  and named  Elast  Technologies  Australia  Asia Pty Ltd or
     similar ("ETAA"),  on terms which the parties intend will be reflected in a
     formal agreement to be entered into between them.

2.   Riverplate  will, upon the signing of this HoA,  subscribe  US$0.25 million
     cash for 250,000 shares of US$1.00 each in ETI and 250,000  options in ETI.
     In addition,  upon the signing of this HoA, ETI will issue to  Riverplate a
     further  250,000  shares of US$1.00 each in ETI and 250,000  options in ETI
     and  Riverplate  will pay for those  additional  shares and options a total
     amount of US$0.25  million in accordance with a payment plan to be mutually
     agreed having regard to ETI's capital requirements,  budget plan and timing
     of the proposed NASDAQ listing for ETI. All 500,000 shares in ETI will have
     special  registration  rights  which will  ensure  that they will be freely
     tradable after the expiration of three months from their date of issue.

3.   After the issue to Riverplate of the 500,000 shares and 500,000  options in
     ETI referred to in paragraph 2 above,  ETI will procure a consolidation  of
     all of its stock (including  options) on the basis of a 5 for 1 reversal of
     stock, reducing Riverplate's holding to 100,000 shares and 100,000 options.

4.   The options in ETI referred to in paragraph 2:

     (a)  will be  exercisable  into fully  paid  shares in ETI on a one for one
          basis at any  time  within 5 years  after  the date on which  they are
          issued at an  exercise  price  (post  consolidation  of ETI  stock) of
          US$12.00 each:

     (b)  will be freely  tradable  after the  expiration  of three  months from
          their date of issue.

5.   ETI will  procure  a  listing  of its stock  and  options  on NASDAQ  using
     mutually agreed brokers and underwriters prior to December 1999.

6.   Whilst it remains a stockholder in ETI,  Riverplate shall have the right to
     appoint and remove one  director,  and to nominate  an  alternate  director
     during any absences of that director.

7.   Riverplate will participate and provide strategic and working input for the
     business of ETI. That input will include such things as:





     (a)  contributing  to the  development  of business  strategies,  including
          international strategic planning;

     (b)  development  of  corporate  structures,  particularly  in  relation to
          international expansion;

     (c)  development of business operating models, including manufacturing, IT,
          communications, customer service and distribution;

     (d)  assisting in the management of patent  applications and  registrations
          and protection of patents generally;

     (e)  review, feedback and input into tester design and new model releases;

     (f)  involvement in tester design review and customer feedback.

8.   ETI will grant to ETAA an exclusive  licence in respect of its products for
     Australia  and New Zealand.  The licence will be a licence to  manufacture,
     supply,  sell and  support  all  products  of ETI or any of its  associated
     companies,  including an electronic allergy  sensitivity  tester, in return
     for a  royalty  of  sales  revenue  or as  otherwise  mutually  agreed.  In
     connection with that licence:

     (a)  ETI will provide product design  specifications and advice in relation
          to  manufacturing  the products,  data processing and  communications,
          design and protocol  and all other  relevant  and  available  business
          information and processes.

     (b)  ETI will initially supply products  requested by ETAA for sale by ETAA
          on terms to be mutually agreed and set out in the licensing agreement.

     (c)  the initial term will be 10 years with ETAA having the right to extend
          for 2 additional periods of 5 years each.

9.   ETI and Riverplate will together in good faith consider, plan and negotiate
     the  terms on  which  ETI  might  grant to ETAA  first  options  to take up
     exclusive  licences  in  respect  of the Asian  region  and  Europe  (being
     licences to  manufacture,  supply,  sell and support all products of ETI or
     any of its associated companies,  including and electronic allergy products
     of ETI or any of its associated companies, including and electronic allergy
     sensitivity tester) and the timetable which will apply to the establishment
     of the Asian region and European businesses.

10.  In the event that ETI requires  further  capital,  Riverplate will be given
     the first right to provide that capital (but will be under no obligation to
     do so).

11.  The initial  shareholders of ETAA will be David Mortimer,  Peter Bradfield,
     Ted  Hamilton,  Nick Spencer and Graham  Kelly.  It is the intention of the
     parties  that ETI will have a  shareholding  in ETAA via a share swap or as
     otherwise mutually agreed.

12.  Each of the parties shall keep in confidence all  information of a material
     and





     necessary  to be  provided  to  advisers  and  financiers  in the course of
     progressing  the proposals  contemplated in this HoA and except as required
     by law.

Signed for and on behalf of ELAST         Signed for and on behalf of Riverplate
Technologies Inc.                         Securities Pty Ltd.

/s/ [ILLEGIBLE]                           /s/ [ILLEGIBLE]
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(Signature)                               (Signature)

                                          /s/ PETER CALVIN BRADFIELD
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(Full name)                               (Full name)

/s/ [ILLEGIBLE]                           /s/ [ILLEGIBLE]
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(Signature)                               (Signature)

                                          /s/ [ILLEGIBLE]
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(Full name)                               (Full name)