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                           OFFER TO PURCHASE FOR CASH
                     ALL OUTSTANDING SHARES OF COMMON STOCK
 
                                       OF
 
                                  AMBAR, INC.
                                       AT
 
                               $18 NET PER SHARE
                                       BY
 
                             AI ACQUISITIONS CORP.
                            A CORPORATION FORMED BY
 
                                THE BEACON GROUP
 
THE OFFER AND WITHDRAWAL RIGHTS WILL EXPIRE AT 12:00 MIDNIGHT, NEW YORK CITY
TIME, ON MONDAY, AUGUST 5, 1996, UNLESS THE OFFER IS EXTENDED
 
                                                                    July 9, 1996
 
To Brokers, Dealers, Commercial Banks,
Trust Companies and Other Nominees:
 
     We have been appointed by AI Acquisitions Corp., a Delaware corporation
("Purchaser") formed by The Beacon Group, a New York general partnership, to act
as Information Agent in connection with Purchaser's offer to purchase all
outstanding shares of common stock, par value $.01 per share (the "Shares"), of
AMBAR, Inc., a Delaware corporation (the "Company"), at a purchase price of $18
per Share, net to the seller in cash, without interest thereon, upon the terms
and subject to the conditions set forth in the Offer to Purchase, dated July 9,
1996 (the "Offer to Purchase"), and in the related Letter of Transmittal (which
together constitute "Offer") enclosed herewith.
 
     Holders of Shares whose certificates for such Shares (the "Share
Certificates") are not immediately available or who cannot complete the
procedures for book-entry transfer on a timely basis, must tender their Shares
according to the guaranteed delivery procedures set forth in Section 3 of the
Offer to Purchase.
 
     Please furnish copies of the enclosed materials to those of your clients
for whose accounts you hold Shares registered in your name or in the name of
your nominee.
 
     The Offer is conditioned upon, among other things, Shares representing not
less than 90% of the outstanding Shares on a Fully Diluted Basis (as defined in
the Offer to Purchase) being validly tendered and not withdrawn prior to the
expiration of the Offer (the "Minimum Share Condition"). The Offer is also
subject to other terms and conditions contained in the Offer to Purchase. See
the Introduction and Sections 1, 14 and 15 of the Offer to Purchase.
 
     Enclosed herewith for your information and forwarding to your clients are
copies of the following documents:
 
          1. The Offer to Purchase, dated July 9, 1996.
 
          2. The Letter of Transmittal to tender Shares for your use and for the
     information of your clients. Facsimile copies of the Letter of Transmittal
     may be used to tender Shares.
 
          3. The Notice of Guaranteed Delivery for Shares to be used to accept
     the Offer if certificates for Shares are not immediately available or if
     such certificates and all other required documents cannot be
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     delivered to The First National Bank of Boston (the "Depositary") by the
     Expiration Date or if the procedure for book-entry transfer cannot be
     completed by the Expiration Date.
 
          4. A letter to stockholders of the Company from Randolph M. Moity,
     Sr., Chairman, Chief Executive Officer and President of the Company,
     together with the Solicitation/Recommendation Statement on Schedule 14D-9
     filed with the Securities and Exchange Commission by the Company.
 
          5. A printed form of letter which may be sent to your clients for
     whose accounts you hold Shares registered in your name or in the name of
     your nominee, with space provided for obtaining such clients' instructions
     with regard to the Offer.
 
          6. Guidelines of the Internal Revenue Service for Certification of
     Taxpayer Identification Number on Substitute Form W-9.
 
          7. A return envelope addressed to the Depositary.
 
     YOUR PROMPT ACTION IS REQUESTED. WE URGE YOU TO CONTACT YOUR CLIENTS AS
PROMPTLY AS POSSIBLE. PLEASE NOTE THAT THE OFFER AND WITHDRAWAL RIGHTS WILL
EXPIRE AT 12:00 MIDNIGHT, NEW YORK CITY TIME, ON MONDAY, AUGUST 5, 1996, UNLESS
THE OFFER IS EXTENDED.
 
     In order to accept the Offer, a duly executed and properly completed Letter
of Transmittal and any required signature guarantees, or an Agent's Message (as
defined in the Offer to Purchase) in connection with a book-entry delivery of
Shares, and any other required documents should be sent to the Depositary and
Share Certificates representing the tendered Shares should be delivered to the
Depositary or such Shares should be tendered by book-entry transfer into the
Depositary's account maintained at one of the Book Entry Transfer Facilities (as
described in the Offer to Purchase), all in accordance with the instructions set
forth in the Letter of Transmittal and the Offer to Purchase.
 
     If holders of Shares wish to tender, but it is impracticable for them to
forward their Share Certificates or other required documents on or prior to the
Expiration Date or to comply with the book-entry transfer procedures on a timely
basis, a tender of Shares may be effected by following the guaranteed delivery
procedures specified in Section 3 of the Offer to Purchase.
 
     Purchaser will not pay any commission or fees to any broker, dealer or
other person (other than the Information Agent, as described in the Offer to
Purchase) for soliciting tenders of Shares pursuant to the Offer. Purchaser
will, however, upon request, reimburse you for customary clerical and mailing
expenses incurred by you in forwarding any of the enclosed materials to your
clients. Parent will pay or cause to be paid any stock transfer taxes payable on
the transfers of Shares to it, except as otherwise provided in Instruction 6 of
the Letter of Transmittal.
 
     Any inquiries you may have with respect to the Offer should be addressed to
us at our address and telephone number set forth on the back cover of the Offer
to Purchase. Requests for additional copies of the enclosed materials may also
be directed to us.
                                          Very truly yours,
 
                                          GEORGESON & COMPANY INC.
                                          Information Agent
 
     NOTHING CONTAINED HEREIN OR IN THE ENCLOSED DOCUMENTS SHALL CONSTITUTE YOU
OR ANY OTHER PERSON THE AGENT OF THE PURCHASER, THE COMPANY, THE DEPOSITARY OR
THE INFORMATION AGENT, OR ANY AFFILIATE OF ANY OF THEM, OR AUTHORIZE YOU OR ANY
OTHER PERSON TO MAKE ANY STATEMENT OR USE ANY DOCUMENT ON BEHALF OF ANY OF THEM
IN CONNECTION WITH THE OFFER OTHER THAN THE ENCLOSED DOCUMENTS AND THE
STATEMENTS CONTAINED THEREIN.
 
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