VALUESTAR CORPORATION
                                                                    EXHIBIT 4.13

Warrant #98B-__

THE SECURITIES REPRESENTED BY THIS CERTIFICATE AND THE OTHER SECURITIES ISSUABLE
UPON EXERCISE THEREOF HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933,
AS AMENDED  (THE  "ACT"),  OR UNDER ANY STATE  SECURITIES  LAWS,  AND MAY NOT BE
OFFERED,  SOLD,  TRANSFERRED,  PLEDGED  OR  HYPOTHECATED  IN THE  ABSENCE  OF AN
EFFECTIVE  REGISTRATION  STATEMENT  FOR  SUCH  SECURITIES  UNDER  THE ACT OR ANY
APPLICABLE  STATE  SECURITIES LAWS OR AN OPINION OF COUNSEL  SATISFACTORY TO THE
COMPANY THAT AN EXEMPTION FROM SUCH REGISTRATION IS AVAILABLE.

THE  SECURITIES   REPRESENTED  BY  THIS   CERTIFICATE  ARE  SUBJECT  TO  CERTAIN
RESTRICTIONS  ON  TRANSFER  SET FORTH  HEREIN AND IN THAT  CERTAIN  SUBSCRIPTION
AGREEMENT  THEREFOR  DATED MAY 12, 1998  BETWEEN  THE  COMPANY AND THE  ORIGINAL
HOLDER HEREOF.


                              VALUESTAR CORPORATION

                             STOCK PURCHASE WARRANT

         THIS  CERTIFIES  THAT, for value  received,  VALUESTAR  CORPORATION,  a
Colorado corporation (the "Company"),  hereby grants to _____________ ("Holder")
the right to purchase from the Company up to _______________  (_________) shares
of the  Common  Stock of the  Company  (the  "Warrant  Shares"),  subject to the
following terms and conditions:

         1. Series.  This Warrant is one of a duly authorized series of warrants
of the Company  (which are  identical  except for the  variations  necessary  to
express the identification numbers, names of the holder, number of common shares
issuable upon exercise thereof and warrant issue dates)  designated as its "1998
Series B Warrants"  issued pursuant to and subject to that certain  Subscription
Agreement of even date herewith.

         2. Term.  This Warrant may be exercised in whole or in part at any time
during the period  from the date of issuance  of this  Warrant  until 5:00 p.m.,
California time, on April 30, 2003 (the "Exercise Period").

         3.  Purchase   Price.   The  purchase  price  for  each  Warrant  Share
purchasable  hereunder  shall be Two United  States  Dollars  (U.S.  $2.00) (the
"Warrant  Exercise Price") subject to adjustment for stock splits,  combinations
and the like.

         4. Exercise of Warrant. The purchase rights represented by this Warrant
may be exercised by the Holder,  in whole or in part,  at any time and from time
to time before the end of the  Exercise  Period by  surrender of this Warrant at
the principal office of the Company in Alameda, California (or such other office
or agency of the Company as may be designated by notice in writing to the Holder
at the address of the Holder  appearing on the books of the  Company),  together
with the Notice of Exercise annexed hereto duly completed and executed on behalf
of the Holder  accompanied  by  payment  in full of the amount of the  aggregate
Warrant Exercise Price in immediately  available funds in United States Dollars.
Certificates  for shares  purchased  hereunder  shall be delivered to the Holder
within ten (10)  business  days after the date on which this Warrant  shall have
been exercised as aforesaid, but Holder shall be deemed the record owner of such
Warrant  Shares as of and from the close of  business  on the date on which this
Warrant shall be surrendered.

         5. Fractional Interest.  The Company shall not be required to issue any
fractional shares on the exercise of this Warrant.

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         6.  Redemption of Warrants.  The Company may elect on one occasion,  by
written  notice as  provided  herein  (the  "Company  Notice"),  to  redeem  all
outstanding  Warrants  including this Warrant,  in whole but not in part, on any
date  (the  "Redemption  Date")  fixed  by the  Company  at a price  of $.01 per
outstanding  Warrant Share (the "Redemption  Price")  following such time as the
Closing  Bid Price (as  defined  below) of the  Company's  Common  Stock for the
twenty (20)  consecutive  Trading Days (as defined  below) equals or exceeds two
hundred  twenty five percent  (225%) of the Warrant  Exercise  Price;  provided,
however,  that this  Warrant  may be  exercised  at any time prior to 5:00 p.m.,
California time, on the business day immediately  preceding the Redemption Date.
No notice shall be  effective,  unless  otherwise  agreed by Holder,  unless the
Warrant Shares issuable are duly registered under the Securities Act of 1933, as
amended. Holder shall, in any event, cooperate with the Company to register such
Warrant Shares as the Company may reasonably request.

         For purposes  hereof,  (i) the term "Trading Day" shall mean any day on
which  securities  are traded on the  applicable  securities  exchange or in the
applicable  securities  market; and (ii) the term "Closing Bid Price" in respect
of a Trading  Day  shall  mean the  reported  last  closing  bid  price,  on the
principal national  securities exchange on which the Common Stock of the Company
is listed or admitted to trading or, if not listed or admitted to trading on any
national securities exchange,  on the Nasdaq Stock Market or, if not admitted to
trading or quoted on the  Nasdaq  Stock  Market,  the  closing  bid price in the
over-the-counter  market as furnished by any quotation medium or any member firm
of a national  securities exchange or the Nasdaq Stock Market selected from time
to time by the Company for that purpose.

         The Company shall provide at least 10 days written notice to the Holder
("Company  Notice")  prior to the  Redemption  Date  specified  in such  written
notice.

         7. Warrant Confers No Rights of Shareholder.  Holder shall not have any
rights as a shareholder  of the Company with regard to the Warrant  Shares prior
to actual exercise resulting in the purchase of the Warrant Shares.

         8.  Investment  Representation.  Neither  this  Warrant nor the Warrant
Shares issuable upon the exercise of this Warrant have been registered under the
Securities  Act of 1933,  as  amended  (the  "Securities  Act"),  or  under  any
applicable  state  securities  laws.  Holder  acknowledges by acceptance of this
Warrant that (a) it has acquired this Warrant for investment and not with a view
toward distribution; (b) it has a pre-existing personal or business relationship
with the Company,  or its  executive  officers,  or by reason of its business or
financial  experience  it has the  capacity  to  protect  its own  interests  in
connection with the transaction; and (c) except as so notified to the Company in
writing,  it is an  accredited  investor as that term is defined in Regulation D
promulgated  under the  Securities  Act.  Holder agrees that any Warrant  Shares
issuable upon exercise of this Warrant will be acquired for  investment  and not
with a view  toward  distribution;  and  acknowledges  that to the  extent  such
Warrant  Shares will not be registered  under the  Securities Act and applicable
state securities laws, that such Warrant Shares may have to be held indefinitely
unless they are  subsequently  registered or qualified  under the Securities Act
and  applicable  state  securities  laws;  or,  based on an  opinion  of counsel
reasonably  satisfactory to the Company, an exemption from such registration and
qualification  is  available.  Holder,  by  acceptance  hereof,  consents to the
placement of the following  restrictive  legends,  or similar  legends,  on each
certificate  to be  issued  to  Holder by the  Company  in  connection  with the
issuance of such Warrant Shares:

         THE SECURITIES REPRESENTED BY THIS CERTIFICATE HAVE NOT BEEN REGISTERED
         UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE "ACT"),  OR UNDER ANY
         STATE  SECURITIES  LAWS,  AND MAY NOT BE  OFFERED,  SOLD,  TRANSFERRED,
         PLEDGED OR  HYPOTHECATED  IN THE ABSENCE OF AN  EFFECTIVE  REGISTRATION
         STATEMENT  FOR SUCH  SECURITIES  UNDER THE ACT OR AN OPINION OF COUNSEL
         SATISFACTORY   TO  THE   CORPORATION   THAT  AN  EXEMPTION   FROM  SUCH
         REGISTRATION IS AVAILABLE.

         THE SECURITIES  REPRESENTED BY THIS  CERTIFICATE ARE SUBJECT TO CERTAIN
         RESTRICTIONS  ON  TRANSFER  SET  FORTH  IN  THAT  CERTAIN

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         SUBSCRIPTION   AGREEMENT  THEREFOR  DATED  MAY  12,  1998  BETWEEN  THE
         CORPORATION AND THE ORIGINAL HOLDER HEREOF.

         9.  Reservation  of Shares.  The Company agrees at all times during the
Exercise  Period to have authorized and reserved,  for the exclusive  purpose of
issuance and delivery  upon  exercise of this  Warrant,  a sufficient  number of
shares of its Common Stock to provide for the exercise of the rights represented
hereby.

         10. Adjustment for  Re-Classification  of Capital Stock. If the Company
at any time during the Exercise  Period shall,  by  subdivision,  combination or
re-classification of securities,  change any of the securities to which purchase
rights under this Warrant exist under the same or different number of securities
of any class or classes,  this Warrant  shall  thereafter  entitle the Holder to
acquire  such  number and kind of  securities  as would have been  issuable as a
result of such change with respect to the Warrant  Shares  immediately  prior to
such subdivision,  combination or re-classification.  If shares of the Company's
common stock are subdivided into a greater number of shares of common stock, the
purchase  price for the Warrant  Shares upon  exercise of this Warrant  shall be
proportionately   reduced  and  the  Warrant  Shares  shall  be  proportionately
increased; and conversely,  if shares of the Company's common stock are combined
into a smaller number of common stock shares, the price shall be proportionately
increased, and the Warrant Shares shall be proportionately decreased.

         11. Public Offering Lock-Up. In connection with any public registration
of this Company's securities,  the Holder (and any transferee of Holder) agrees,
upon the request of the Company or the underwriter(s) managing such underwritten
offering of the Company's securities, not to sell, make any short sale of, loan,
grant any option for the purchase of, or otherwise dispose of this Warrant,  any
of the shares of Common  Stock  issuable  upon  exercise of this  Warrant or any
other  securities  of the Company  heretofore  or  hereafter  acquired by Holder
(other  than those  included  in the  registration)  without  the prior  written
consent of the Company and such underwriter(s), as the case may be, for a period
of time not to exceed one hundred  eighty (180) days from the effective  date of
the  registration.  Upon request by the Company,  Holder (and any  transferee of
Holder)  agrees  to enter  into  any  further  agreement  in  writing  in a form
reasonably satisfactory to the Company and such underwriter(s).  The Company may
impose stop-transfer  instructions with respect to the securities subject to the
foregoing  restrictions  until the end of said 180-day period. Any shares issued
upon exercise of this Warrant shall bear an appropriate  legend referencing this
lock-up provision.

12. Registration Rights. (a) As promptly as possible following the completion of
the audited statements for the fiscal year ended June 30, 1998 and the filing of
the Form 10-KSB (due September 30, 1998), the Company shall use its best efforts
to file a  registration  statement  to include all of the Warrant  Shares if the
Warrant Shares can be registered within the same registration statement selected
by the  Company  for the  Conversion  Shares  related  to the Note to which this
Warrant relates. The Company's intention is to file with the SEC to register the
Warrant Shares pursuant to Form S-3, Form SB-2 or other  appropriate form and to
use its best efforts to keep such registration statement effective for a minimum
period of nine  months  when,  if and after it becomes  effective.  The  Warrant
Shares registered under such  Registration  Statement shall be registered at the
Company's sole cost and expense  provided that the  Noteholder  enters into such
agreements,  including  indemnification  provisions  as outlined  below,  as the
Company may reasonably request. The Company will not be required to register any
Warrant Shares issued prior to an effective registration. Other than provided in
this  paragraph  and below,  the Company  shall have no obligation to amend such
registration or file a further registration on the Warrant Shares.

         (b) If, at any time during the Exercise Period, the Company proposes to
prepare  and file any  registration  statements  covering  its Common  Stock (in
either case, other than in connection with a merger or acquisition,  pursuant to
Form  S-8 or any  successor  form,  or  pursuant  to any  other  form or type of
registration  in which  Registrable  Securities  (as  defined  below)  cannot be
appropriately included) (collectively,  the "Registration Statements"),  it will
give  written  notice as provided  herein at least thirty (30) days prior to the
filing of each such Registration Statement to the Holders of the Warrants and/or
Warrant Shares of its intention to do so. If the Holders of the Warrants  and/or
Warrant  Shares notify the Company  within twenty (20) days after receipt of any
such  notice  of its or their  desire to  include  the  shares  of Common  Stock
issuable upon exercise of the Warrant or the Warrant Shares  (collectively,  the
"Registrable  Securities") in such proposed registration statement,  the Company
shall afford the Holders of the Warrant and/or Warrant Shares the opportunity to
have  any  such  Registrable   Securities  registered

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under  such  registration  statement  at the  Company's  sole  cost and  expense
provided that the Holder enters into such agreements,  including indemnification
provisions as outlined below as the Company or its  underwriters  may reasonably
request.

         (c)  Notwithstanding  the provisions hereof, the Company shall have the
right at any time after it shall  have  given  written  notice  pursuant  hereto
(irrespective  of whether a written request for inclusion of any such securities
shall  have  been  made) to elect  not to file  any such  proposed  registration
statement,  or to withdraw the same after the filing but prior to the  effective
date thereof.

         (d)  Notwithstanding  any  other  provision  of  this  Section,  if the
underwriter  managing  such  registration  notifies  the Holders in writing that
market  or  economic  conditions  limit  the  amount  of  securities  which  may
reasonably be expected to be sold,  the Holders of such  Registrable  Securities
will be allowed to register only those Registrable  Securities permitted by such
underwriter  pro rata  based on the number of shares of  Registrable  Securities
held by such Holders,  respectively. No Registrable Securities excluded from the
underwriting  by  reason  of the  underwriter's  marketing  limitation  shall be
included in such registration.

         (e) Each Holder of Warrants and Warrant  Shares to be sold  pursuant to
any Registration Statement (each, a "Distributing Holder") shall severally,  and
not  jointly,  indemnify  and  hold  harmless  the  Company,  its  officers  and
directors,  each  underwriter and each person,  if any, who controls the Company
and such  underwriter,  against any loss, claim,  damage,  expense or liability,
joint or several, as incurred, to which any of them may become subject under the
Securities  Act or any other  statute or at common  law, in so far as such loss,
claim,  damage,  expense or liability (or actions in respect thereof) arises out
of or is based upon any untrue  statement  or alleged  untrue  statement  of any
material fact  contained in any such  Registration  Statement,  any  preliminary
prospectus or final prospectus contained therein, or any amendment or supplement
thereto,  or any omission or alleged  omission to state  therein a material fact
required to be stated  therein or necessary to make the statements  therein,  in
light of the circumstances  under which they were made, not misleading,  in each
case to the  extent,  but only to the  extent,  that such  untrue  statement  or
alleged  untrue  statement or omission or alleged  omission was made in reliance
upon and in conformity with written information furnished to the Company by such
Distributing Holder specifically for use therein. Such Distributing Holder shall
reimburse  the Company,  such  underwriter  and each such  officer,  director or
controlling person for any legal or other expenses reasonably incurred by any of
them in  connection  with  investigating  or defending  any such  liability,  as
incurred.  Notwithstanding  the  foregoing,  such indemnity with respect to such
preliminary  prospectus or such final  prospectus shall not inure to the benefit
of the  Company,  its  officers  or  directors,  or such  underwriter  (or  such
controlling  person of the Company or the  underwriter) if the person  asserting
any such loss, claim, damage, expense or liability purchased the securities that
are the subject  thereof and did not receive a copy of the final  prospectus (or
the final  prospectus as then amended,  revised or  supplemented) at or prior to
the time such furnishing is required by the Securities Act in any case where any
such  untrue  statement  or  omission  of  a  material  fact  contained  in  the
preliminary  prospectus was corrected in the final  prospectus (or, if contained
in the final prospectus,  was subsequently  corrected by amendment,  revision or
supplement).

         13. Assignment. With respect to any offer, sale or other disposition of
this Warrant or any underlying  securities,  the Holder will give written notice
to the Company prior thereto,  describing  briefly the manner thereof,  together
with a written opinion of such Holder's counsel,  to the effect that such offer,
sale or other distribution may be effected without registration or qualification
(under any applicable federal or state law then in effect). Furthermore, no such
transfer shall be made unless the transferee meets the same investor suitability
standards set forth in Section 8 of this Warrant and corresponding  Subscription
Agreement  hereto.  Promptly upon  receiving  such written notice and reasonably
satisfactory opinion, if so requested,  the Company, as promptly as practicable,
shall notify such Holder that such Holder may sell or otherwise  dispose of this
Warrant or the underlying securities, as the case may be, all in accordance with
the terms of the written notice delivered to the Company. If a determination has
been made pursuant to this Section 13 that the opinion of counsel for the Holder
is not reasonably  satisfactory to the Company,  the Company shall so notify the
Holder  promptly  after such  determination  has been made.  Each  Warrant  thus
transferred  shall  bear  the  same  legends  appearing  on  this  Warrant,  and
underlying  securities  thus  transferred  shall bear the  legends  required  by
Section 8. The Company may impose stop-transfer  instructions in connection with
such restrictions.  Subject to any restrictions on transfer described  elsewhere
herein, the rights and

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obligations  of the Company and the Holder of this Warrant shall be binding upon
and benefit the successors,  assigns,  heirs,  administrators and transferees of
the parties hereto.

         14.  Notice.  Any  notice,   demand,  consent  or  other  communication
hereunder  shall be in writing  addressed  to the other  party at its  principal
office or, in respect  of  Holder,  as its  address as shown on the books of the
Company, or to such other address as such party shall have theretofore furnished
by like notice,  and either served  personally,  sent by express,  registered or
certified first class mail, postage prepaid, sent by facsimile transmission,  or
delivered by reputable commercial courier. Such notice shall be deemed given (i)
when so  personally  delivered,  or (ii) if mailed as  aforesaid,  five (5) days
after  the  same  shall  have  been  posted,  or  (iii)  if  sent  by  facsimile
transmission, as soon as sender receives written or telephonic confirmation that
the message has been  received  and such  facsimile  is followed the same day by
mailing by prepaid first class mail, or (iv) if delivered by commercial courier,
upon receipt.

         15.  Governing  Law. This Warrant shall be governed by and construed in
accordance  with the laws of the State of  California,  applicable  to contracts
between  California  residents entered into and to be performed  entirely within
the State of  California.  Venue for all  purposes  hereunder  shall be  Alameda
County, California.

         16.  Attorneys' Fees. If any action at law or in equity is necessary to
enforce or interpret the terms of this Warrant,  the  prevailing  party shall be
entitled to reasonable  attorneys' fees, costs and  disbursements in addition to
any other relief to which such party may be entitled.

         17. Descriptive Headings. The headings used herein are descriptive only
and for the convenience of identifying provisions,  and are not determinative of
the meaning or effect of any such provisions.

IN WITNESS  WHEREOF,  the Company has caused this  Warrant to be executed by its
duly authorized officer as of this 12th day of May, 1998.


                                                  VALUESTAR CORPORATION

                                                  /s/ JAMES A. BARNES
                                                  James A. Barnes, Treasurer
                                                     Authorized Officer

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