EXHIBIT 4.6

                    WARRANT AND REGISTRATION RIGHTS AGREEMENT


     AGREEMENT,  dated as of the 27th day of  September,  1996,  by and  between
H.E.R.C.   PRODUCTS   INCORPORATED   ("Company")  and  THE  EQUITY  GROUP,  INC.
("Holder").

                  WHEREAS, on September 27, 1996 ("Date of Grant"),  the Company
agreed to issue a warrant  ("Warrant")  to The Equity  Group,  Inc.,  a New York
corporation  ("Equity"),  to purchase up to 50,000  shares of the common  stock,
$.01 par value ("Common Stock"),  and in connection therewith the Company agreed
to grant the registration  rights set forth below,  said Warrant being issued in
respect of Equity's services to the Company pursuant to that certain  Consulting
Agreement entered into between Equity and the Company on September 27, 1996 (the
"Consulting  Agreement")  pursuant to which Equity will render  financial public
relations and consulting services to the Company for a period of up to two years
until September 30, 1998.

                  NOW  THEREFORE,  in  consideration  of  the  covenants  herein
contained, the parties hereto hereby agree as follows:

     1. Issuance.  The Company hereby issues to the Holder the right to purchase
up to an aggregate of 50,000 shares of Common Stock on the terms and  conditions
herein set forth (such right being referred to as the "Warrant").

     2.  Purchaser  Price.  The  purchase  price of each  share of Common  Stock
subject to this Warrant shall be $2.75.

     3.  Exercise  and Term.  The Holder has the right to purchase the shares of
Common Stock subject to this Warrant from  September 27, 1996 until the close of
business on September 26, 2001.

     4. Payment of Exercise  Price.  The purchase price for the shares of Common
Stock  pursuant to which the Warrant is  exercised,  will be paid in full at the
time of exercise, in cash by certified check or wire transfer,  unless otherwise
agreed to in writing by the Company.  Exercise of any Warrant hereunder shall be
by written notice to the Company at its principal place of business,  specifying
the number of shares of Common Stock being  purchased and accompanied by payment
of the purchase price and any withholding tax obligations imposed on the Company
by reason of the exercise of the Warrant.  In the event that the tax obligation,
if any, is not paid,  the Company  will be  permitted to treat as payment of any
withholding  tax amount due,  the  exercise  of that  number of whole  shares of
Common Stock equal to the amount of the tax due divided by the fair market value
of the Common  Stock as of the date the  Warrant is  exercised,  and the Company
will be permitted to deduct such number of shares of Common Stock from the total
number being  exercised.  Certificates  representing  the shares as to which the
Warrant shall have been exercised  shall be registered in the name of the person
exercising the Warrant.

     5. Rights of Stockholder.  The Holder shall not have any of the rights of a
stockholder  with respect to the Common Stock  covered by the Warrant  until the
date of the issuance of a stock certificate for shares of Common Stock purchased
hereunder.

     6.  Transferability.  Unless consented to in writing by the Company,  which
consent  shall  not be  unreasonably  withheld,  this  Warrant  and  the  rights
conferred may not be transferred,  assigned,  pledged or hypothecated in any way
(whether  by  operation  of law or  otherwise)  and  shall  not  be  subject  to
execution,  attachment or similar process. Upon any attempt to transfer, assign,
pledge,  hypothecate or otherwise dispose of this Warrant or any right conferred
hereby,  or upon the levy of any  attachment  or  similar  process on the rights
conferred hereby,  without the written consent of the Company,  this Warrant and
the rights conferred hereby shall  immediately  become null and void. Before the
Company  consents to any transfer,  assignment,  pledge or hypothecation of
this Warrant, the transferee,  assignee or pledgee of the Warrant shall agree to
be bound by the terms of this  Warrant and deliver such other  certificates  and
agreements as the Company reasonably requests. Notwithstanding the foregoing and
subject to paragraph 8 below, the Warrant may be transferred to the then current
officers,   directors   and   shareholders   of  the  Holder   (the   "Permitted
Transferees"), provided such Permitted






Transferees  agree to be bound by the terms of this  Warrant  and  deliver  such
certificates and agreements as the Company reasonably requests.

     7. Restricted  Nature of Securities.  This Warrant and the shares of Common
Stock  receivable  on the exercise of the Warrant are not  registered  under the
Securities  Act of 1933,  as amended (the "Act").  As a condition to the sale of
Common Stock on the exercise of the Warrant,  the person exercising such warrant
may be  required  by the  Company  to  give it such  documents,  including  such
appropriate  investment  representations  as may be  required by Counsel for the
Company  and such  additional  agreements  as the  Counsel  for the  Company may
determine,  as a  condition  to the  acceptance  of the  exercise of any Warrant
hereunder.

                  The  Holder  represents  that it has  received  and  carefully
reviewed the  Company's  Annual  Report on Form 10-KSB for the fiscal year ended
December 31, 1995, Quarterly Reports on Form 10-QSB for the quarters ended March
31, 1996 and June 30, 1996, and Annual Report to Stockholders  and related proxy
materials for the Company's Annual Meeting,  held on July 18, 1996, and has been
granted the opportunity to obtain any additional, publicly available information
relating to the Company and ask  questions of  executives of the Company that it
deems  necessary  to verify the  accuracy and  completeness  of the  information
provided to it.  Holder  represents  that it is acquiring  this Warrant and will
acquire the Common  Stock on its exercise  solely for its own  account,  for the
purpose of investment  and not with a view to or for resale in  connection  with
any  distribution  thereof,  except in compliance  with the Act, any  applicable
state  securities  laws  and  the  rules  and  regulations  thereunder.   Holder
represents  that its knowledge and experience in financial and business  matters
is such that it is capable of  evaluating  an investment in the Warrant and that
its financial condition is such that it can bear the economic risks of acquiring
and holding this Warrant.

     8. Sales Under  Securities Act.  Anything in this Agreement to the contrary
notwithstanding,  the Holder hereby  agrees that it shall not sell,  transfer by
any means or  otherwise  dispose of this  Warrant or the shares of Common  Stock
acquired  by him upon  exercise of the Warrant  hereunder  without  registration
under the Act,  or in the event that they are not so  registered,  unless (a) an
exemption from the Act is available thereunder, and (b) the Holder has furnished
the  Company  with  notice of such  proposed  transfer,  and the Counsel for the
Company, in its reasonable  opinion,  shall deem such proposed transfer to be so
exempt,  or the Holder has  furnished  the Company with notice of such  proposed
transfer,  together with an opinion of legal counsel reasonably  satisfactory to
the  Counsel for the  Company,  that in such  counsel's  opinion  such  proposed
transfer shall be so exempt.

     9.    Stop Transfer: Legend.

     (a) The Company may place stop  transfer  orders  with its  transfer  agent
against the  transfer of the shares of Common Stock  issuable  under the Warrant
hereof in the absence of  registration  under the Act or an exemption  therefrom
provided herein.

     (b) The  certificates  evidencing  shares  of Stock to be  issued  upon the
exercise of the Warrant may bear the following legends:

                           "The shares represented by this certificate have been
                           acquired for investment and have not been  registered
                           under the  Securities  Act of 1933,  as amended.  The
                           shares may not be sold or  transferred in the absence
                           of such registration or an exemption  therefrom under
                           said Act."

                           "The shares represented by this certificate have been
                           acquired  pursuant  to  an  warrant  agreement  dated
                           September  27,  1996, a copy of which is on file with
                           the Company,  and may not be transferred,  pledged or
                           disposed or exempt in  accordance  with the terms and
                           conditions thereof."




                                                       2





     10.            Adjustment to Number of Securities.

     (a) If the outstanding shares of Common Stock of the Company are increased,
decreased,  changed into or exchanged for a different number or kind of stock or
securities of the Company through stock  dividend,  stock split or reverse stock
split, or stock of a different par value or without par value through  amendment
to the Company's Certificate of Incorporation,  an appropriate and proportionate
adjustment  shall be made in the number and/or kind of  securities  allocated to
this Warrant,  without change in the aggregate  purchase price applicable to the
unexercised  portion  of the  outstanding  portion of this  Warrant,  but with a
corresponding  adjustment  in the price for each share of Common  Stock or other
unit of any security remaining covered by this Warrant.

     (b)  Upon the  effective  date of the  dissolution  or  liquidation  of the
Company, or of a reorganization, merger or consolidation of the Company with one
or more  corporations  in which the Company will not survive as an  independent,
publicly owned  corporation,  or of a transfer of substantially all the property
or more than eighty percent (80%) of the then outstanding shares of Common Stock
of the Company to another  corporation,  any  Warrant  granted  hereunder  shall
terminate   unless  provision  be  made  in  writing  in  connection  with  such
transaction for the assumption of the Warrant  granted,  or the substitution for
the Warrants of new warrants covering the shares of a successor corporation,  or
a parent or subsidiary  thereof,  with appropriate  adjustments as to number and
kind of stock and prices, in which event the Warrant  theretofore granted or the
new warrants substituted  therefor,  shall continue in the manner and under
the terms so provided.

     (c)  Adjustments  under  this  paragraph  shall  be  made by the  Board  of
Directors,  whose  determination as to what  adjustments  shall be made, and the
extent thereof, shall be final, binding and conclusive.  No fractional shares of
Stock shall be issued under any such adjustment.

     11.  "Piggyback" Registration.

     (a) Basic  Right.  If at any time prior to  September  26, 2001 the Company
proposes  to register  for sale by it or for the  account of others,  any of its
equity  securities  under  the Act,  other  than in  connection  with a  merger,
acquisition  or  exchange  offer,  and other than an offering on Form S-8 or any
successor form on which the Holder's securities may be registered,  and provided
further  that any person to which the Company has granted a  registration  right
prior to the Date of Grant does not object in  writing  to the  exercise  of the
Holder's  registration  rights  hereunder in  connection  with any  registration
rights of theirs,  the Company  shall,  at least  fifteen (15) days prior to the
filing  of  such  registration   statement  with  the  Securities  and  Exchange
Commission  (the  "Commission"),  give notice of its  intention  to do so to the
Holder. If the Holder notifies the Company within ten (10) days after the giving
of such  notice by the  Company of its  desire to  include  any shares of Common
Stock  received  on  exercise  of this  Warrant  in such  proposed  registration
statement  (which  notice must state the number of shares to be included and the
proposed  plan of  disposition  thereof),  the  Company  shall,  subject  to the
provisions  of  subparagraph  (b) below,  include the shares  designated by said
Holder  in such  registration  statement.  Notwithstanding  the  foregoing,  the
Company shall not be obligated to register any shares of Common Stock receivable
upon exercise of this Warrant at any time the shares are registered  pursuant to
an  effective  registration  statement  under the Act or the Holder may sell the
shares in a public transaction pursuant to Rule 144 promulgated under the Act or
pursuant to another exemption from registration of the shares and/or transaction
under the Act.

     (b) Withdrawal of Registration Statement. Notwithstanding the provisions of
subparagraph  (a) above,  the Company shall at all times have the absolute right
to elect not to file any  proposed  registration  statement,  or to withdraw the
same after the filing but prior to the  effective  date  thereof.  In  addition,
notwithstanding  the  provisions  of  subparagraph  (a) above,  the  Company may
exclude  from such  registration  statement  all or a portion  of the  shares of
Common  Stock for which  registration  was  requested  by the  Holder if, in the
written opinion of the Company's managing underwriter,  if any, the inclusion of
all or a portion of such shares,  when added to the securities  being registered
for sale by the  Company,  will  exceed  the  maximum  amount  of the  Company's
securities which can be marketed (i) at a price reasonably related to their then
current  market  value,  or (ii)  without  otherwise  materially  and  adversely
affecting the entire offering. If less than all of the shares



                                                       3





of Common Stock requested for inclusion in said registration statement are to be
included pursuant to the foregoing  provision,  the shares of Common Stock which
are included shall be allocated among the selling  shareholders  (other than the
Company) on a pro rata basis.

     12. Terms and Conditions  Relating to Registration  of Shares.  Anything in
paragraph  11 above  contained to the contrary  notwithstanding,  the  following
terms and conditions shall apply to each  registration of shares of Common Stock
under the Act pursuant to the provisions of paragraph 11 above:

     (a)  Registration  Not  Required.  The  Company  shall not be  required  to
register any shares of Common Stock under the Act if, in the written  opinion of
counsel  for the  Company,  which  shall  be in form  and  substance  reasonably
satisfactory to the Holder of the relevant  shares of Common Stock,  said shares
may be sold in the  manner  set forth in the  notice to the  Company  requesting
registration without the need for compliance with the registration provisions of
the Act.

     (b)  Amendment  of   Registration   Statement.   The  Company   shall,   as
expeditiously as possible,  prepare and file with the Commission such amendments
and supplements to the  registration  statement (and to any prospectus  included
therein) as may be necessary to keep such registration statement effective until
the sale of the shares of Common Stock so registered has been completed or until
the  expiration  of a  period  of 90  days  after  the  effective  date  of  the
registration statement, whichever is earlier.

     (c)  Prospectuses,  etc. The Company shall  furnish to the selling  Holder,
such number of prospectuses, preliminary prospectuses and other documents as the
selling Holder may reasonably  request in order to facilitate the public sale of
its shares of Common Stock.

     (d)  Expenses.  The  Company  shall pay all  costs,  fees and  expenses  in
connection  with the  registration  of the  shares of Common  Stock,  including,
without limitation,  the Company's legal and accounting fees, printing expenses,
and blue sky fees and expenses; provided, however, that the Company shall not be
required to pay any (i) fees and expenses of legal counsel for the Holder,  (ii)
transfer  taxes,  or  (iii)   underwriters'  or  brokers'  fees,   discounts  or
commissions.

     (e) Indemnification.

     (1) By the  Company.  The  Company  shall  indemnify,  to the  full  extent
permitted by law, the Holder,  its  directors and officers (if  applicable)  and
each person, if any, who controls the Holder within the meaning of Section 15 of
the Act, against any losses, claims, damages, liabilities and expenses resulting
from any untrue or alleged untrue  statement of a material fact contained in any
registration statement,  prospectus or preliminary prospectus or any omission or
alleged  omission  to  state  therein  a  material  fact  necessary  to make the
statements therein (in the case of the prospectus or any preliminary prospectus,
in light of the circumstances under which they were made) not misleading, except
insofar as the same are caused by or contained in any  information  with respect
to the Holder  furnished in writing to the Company by the Holder  expressly  for
use therein.

     (2) By the Holder.  In connection with any registration  statement in which
the Holder is  participating,  the Holder  shall  indemnify,  to the full extent
permitted by law, the Company,  its  directors  and officers and each person who
controls  the Company  (within the meaning of Section 15 of the Act) against any
losses, claims,  damages,  liabilities and expenses resulting from any untrue or
alleged untrue  statement of a material fact or any omission or alleged omission
to state a material fact  necessary to make the  statements in the  registration
statement or prospectus or preliminary prospectus (in the case of the prospectus
or any preliminary  prospectus,  in light of the circumstances  under which they
were made) not  misleading,  to the extent,  but only to the  extent,  that such
untrue  statement or omission is contained in or caused by any information  with
respect  to the  Holder  furnished  in  writing  to the  Company  by the  Holder
expressly for use therein.




                                                       4





     (3)   Indemnification   Procedures.   Any   person  who  is   entitled   to
indemnification  under this  subparagraph  12(f) shall (i) give  prompt  written
notice to the  indemnifying  party of any claim  with  respect to which it seeks
indemnification and (ii) permit such indemnifying party to assume the defense of
such  claim with  counsel  reasonably  satisfactory  to the  indemnified  party.
Whether  or  not  such  defense  is  assumed  by  the  indemnifying  party,  the
indemnifying party shall not be subject to any liability for any settlement made
without  its  consent.  No  indemnifying  party  shall  consent  to entry of any
judgment or enter into any settlement which does not include as an unconditional
term thereof the giving by the claimant or plaintiff to such  indemnified  party
of a release  from all  liability  in respect of such  claim or  litigation.  An
indemnifying  party who is not entitled to, or elects not to, assume the defense
of a claim will not be  obligated  to pay the fees and expenses of more than one
counsel for all parties  indemnified by such indemnifying  party with respect to
such  claim,  unless  in the  reasonable  judgment  of any  indemnified  party a
conflict of interest may exist between such  indemnified  party and any other of
such  indemnified  parties  with  respect  to such  claim,  in which  event  the
indemnifying  party  shall be  obligated  to pay the fees and  expenses  of such
additional counsel or counsels.


     (4) Contribution. If for any reason the indemnification provided for in the
preceding  subparagraph  12(f)(i) or  12(f)(ii)  is held by a court of competent
jurisdiction to be unavailable to an indemnified party with respect to any loss,
claim, damage,  liability or expense referred to therein,  then the indemnifying
party,  in  lieu  of  indemnifying  such  indemnified  party  thereunder,  shall
contribute to the amount paid or payable by the indemnified party as a result of
such loss,  claim,  damage or liability in such  proportion as is appropriate to
reflect not only the relative benefits received by the indemnified party and the
indemnifying party, but also the relative fault of the indemnified party and the
indemnifying party, as well as any other relevant equitable considerations.  The
relative fault of the indemnifying  party and of the indemnified  party shall be
determined by reference  to, among other  things,  whether the untrue or alleged
untrue  statement of a material fact or omission to state  material fact relates
to information  supplied by the indemnifying  party or by the indemnified  party
and  the  parties'  relative  intent,  knowledge,   access  to  information  and
opportunity to correct or prevent such statement or omission.

     (5) Actions by Holder. The Holder shall, at his cost and expense, complete,
execute and deliver all  questionnaires,  powers of attorney,  undertakings  and
other documents and  instruments,  and take all such other actions,  as are from
time to time reasonably requested by the Company.

     (6) Use of Prospectus.  The Holder, upon receipt of notice from the Company
of the occurrence of an event which requires a  post-effective  amendment to the
registration statement or a supplement to the prospectus included therein, shall
promptly  discontinue  the  sale of his  shares  of  Common  Stock  until he has
received copies of a supplemented or amended prospectus from the Company.

     13.   Miscellaneous Provisions.

     (a)  Applicable  Law. This  Agreement  will be deemed to have been made and
delivered in New York City and will be governed as to validity,  interpretation,
construction,  effect and in all other respects b the internal laws of the State
of New York.  The Company and the Holder each hereby agrees that any legal suit,
action or  proceeding  arising  out of or relating  to this  Agreement  shall be
instituted  exclusively in New York State Supreme Court,  County of New York, or
in the United  States  District  Court for the  Southern  District  of New York,
waives any objection to the venue of any such suit, action or proceeding and the
right to assert that such forum is not a convenient forum for such suit,  action
or proceeding,  irrevocably  consents to the  jurisdiction of the New York State
Supreme Court,  County of New York, and the United States District Court for the
Southern  District of New York in any such suit, action or proceeding and agrees
to accept and acknowledge  service or any and all process which may be served in
any such suit,  action or proceeding in New York State Supreme Court,  County of
New York or in the United States District Court for the Southern District of New
York and agrees that service of process upon it mailed by certified  mail to its
address  shall be deemed in every respect  effective  service of process upon in
any suit, action or proceeding.




                                                       5




     (b) Amendment.  This Agreement may only be amended by a written  instrument
executed by the Company and by the Holder.

     (c) Entire  Agreement.  This Agreement  constitutes the entire agreement of
the parties hereto with respect to the subject matter hereof, and supersedes all
prior  agreements  and  understandings  of the parties,  oral and written,  with
respect to the subject matter hereof.

     (d)  Execution in  Counterparts.  This  Agreement may be executed in one or
more counterparts,  each of which shall be deemed an original,  but all of which
together shall constitute one and the same document.

     (e)  Notices.  All  notices,  requests,  demands  and other  communications
hereunder  shall be in writing and shall be deemed duly given when  delivered by
hand or mailed by registered or certified mail, postage prepaid,  return receipt
requested, as follows:

                     If to the Holder, to: The Equity Group Inc.
                                               919 Third Avenue
                                               New York, New York  10019
                                               Attention:   Robert D. Goldstein

                     If to Company, to: H.E.R.C. Products Incorporated
                                               3622 North 34th Avenue
                                               Phoenix, Arizona  85017
                                               Attention:  Secretary

     (f)  Headings.  The headings  contained  herein are for the sole purpose of
convenience  of reference,  and shall not in any way limit or affect the meaning
or interpretation of any of the terms or provisions of this Agreement.

     (g) Severability.  Any provision of this Agreement which is held by a court
of  competent   jurisdiction   to  be   prohibited  or   unenforceable   in  any
jurisdiction(s) shall be, as to such jurisdiction(s),  ineffective to the extent
of such  prohibition  or  unenforceability  without  invalidating  the remaining
provisions of this Agreement or affecting the validity or enforceability of such
provision in any other jurisdiction.

     (h) Gender.  Unless the context otherwise  requires,  all personal pronouns
used in this  Agreement,  whether in the  masculine,  feminine or neuter gender,
shall include all other genders.

                  IN WITNESS  WHEREOF,  this  Agreement  has been  executed  and
delivered by the parties hereto as of the date first above written.


                                              H.E.R.C. PRODUCTS INCORPORATED


                                              By: 
                                                 Gary S. Glatter, President


                                              THE EQUITY GROUP, INC.


                                              By: 
                                                 Robert D. Goldstein, President



                                                       6