
<PAGE>
                        NOTICE OF GUARANTEED DELIVERY 
                                     FOR 
                       TENDER OF SHARES OF COMMON STOCK 
                                      OF 
                              AMDURA CORPORATION 
                  (NOT TO BE USED FOR SIGNATURE GUARANTEES) 

   This Notice of Guaranteed Delivery, or one substantially in the form 
hereof, must be used to accept the Offer (as defined below) (i) if 
certificates ("Share Certificates") evidencing shares of common stock, par 
value $.01 per share (the "Shares"), of Amdura Corporation, a Delaware 
corporation (the "Company"), are not immediately available, (ii) if Share 
Certificates and all other required documents cannot be delivered to First 
Fidelity Bank, N.A., as Depositary (the "Depositary"), prior to the 
Expiration Date (as defined in Section 1 of the Offer to Purchase (as defined 
below) or (iii) if the procedure for delivery by book-entry transfer cannot 
be completed on a timely basis. This Notice of Guaranteed Delivery may be 
delivered by hand or mail or transmitted by telegram or facsimile 
transmission to the Depositary. See Section 3 of the Offer to Purchase. 
                     
                        The Depositary for the Offer is:
                       
                           First Fidelity Bank, N.A.
                                               
       By Mail:              By Facsimile:      By Hand/Overnight Courier 
First Fidelity Bank, N.A.   (201) 430-4797       First Fidelity Bank, N.A. 
    P.O. Box 1380                            Corporate Trust/Special Operations
Newark, New Jersey 07101      To Confirm:         10 Bank Street - 3rd Floor 
                             (201) 430-4762        Newark, New Jersey 07102 
                                
                          For Information Call:
                            (800) 458-0924
                              (Toll-Free)
                         
   DELIVERY OF THIS NOTICE OF GUARANTEED DELIVERY TO AN ADDRESS OTHER THAN AS 
SET FORTH ABOVE, OR TRANSMISSION OF INSTRUCTIONS VIA FACSIMILE TRANSMISSION 
OTHER THAN AS SET FORTH ABOVE, WILL NOT CONSTITUTE A VALID DELIVERY. 

   This form is not to be used to guarantee signatures. If a signature on a 
Letter of Transmittal is required to be guaranteed by an "Eligible 
Institution" under the instructions thereto, such signature guarantee must 
appear in the applicable space provided in the signature box on the Letter of 
Transmittal. 

<PAGE>

Ladies and Gentlemen: 

   The undersigned hereby tenders to ADU Acquisition Inc., a Delaware 
corporation and an indirect wholly owned subsidiary of FKI plc, a company 
organized under the laws of England, upon the terms and subject to the 
conditions set forth in the Offer to Purchase, dated March 22, 1995 (the 
"Offer to Purchase"), and the related Letter of Transmittal (which together 
constitute the "Offer"), receipt of each of which is hereby acknowledged, the 
number of Shares specified below pursuant to the guaranteed delivery 
procedure described in Section 3 of the Offer to Purchase. 

Number of Shares: -------------------------     -------------------------------

Certificate Nos. (If Available):                -------------------------------
                                                   Signature(s) of Holder(s) 
Check one box if Shares will be delivered       
by book-entry transfer:                         Dated: ------------------, 1995 

[ ] The Depository Trust Company                Name(s) of Holders: -----------

[ ] Midwest Securities Trust Company            -------------------------------
                                                     Please Type or Print 
[ ] Philadelphia Depository Trust Company 
                                                -------------------------------
- -------------------------------------------               Address 
        Name of Tendering Institution                   
                                                -------------------------------
Account No.-------------------------------                Zip Code 
                                                        
                                                -------------------------------
                                                  Area Code and Telephone No. 
                                                  

                                  GUARANTEE 
                   (NOT TO BE USED FOR SIGNATURE GUARANTEE) 

   The undersigned, a firm which is a member of a registered national 
securities exchange or of the National Association of Securities Dealers, 
Inc. or which is a commercial bank or trust company having an office or 
correspondent in the United States, guarantees to deliver to the Depositary, 
at one of its addresses set forth above, Share Certificates evidencing the 
Shares tendered hereby, in proper form for transfer, or confirmation of book- 
entry transfer of such Shares into the Depositary's account at The Depository 
Trust Company, the Midwest Securities Trust Company or the Philadelphia 
Depository Trust Company, in each case with delivery of a Letter of 
Transmittal (or facsimile thereof) properly completed and duly executed, with 
any required signature guarantees or an Agent's Message (as defined in the 
Offer to Purchase) in the case of a book-entry delivery, and any other 
required documents, all within five New York Stock Exchange, Inc. trading 
days of the date hereof. 

- -----------------------------------         ---------------------------------- 
          Name of Firm                             Authorized Signature 

- -----------------------------------         ---------------------------------- 
           Address                                       Title 

- -----------------------------------         Name:----------------------------- 
          Zip Code                                    Please Type or Print

- -----------------------------------         Dated: ---------------------, 1995 
 Area Code and Telephone No. 

     DO NOT SEND SHARE CERTIFICATES WITH THIS NOTICE. SHARE CERTIFICATES 
               SHOULD BE SENT WITH YOUR LETTER OF TRANSMITTAL. 

                                      



