FOR IMMEDIATE RELEASE                       Contact:     Stacy Seiders
                                                         Isolyser Company, Inc.
                                                         (770) 806-9898
                                                         Donna J. Gaidamak
                                                         Allegiance Corporation
                                                         (847) 578-4434


                    ISOLYSER ANNOUNCES COMPLETION OF ITS SALE
                      OF MEDSURG INDUSTRIES AND LICENSE OF
                          OREX TECHNOLOGY TO ALLEGIANCE


         NORCROSS,  Georgia,  July 13, 1999 - Isolyser  Company,  Inc.  (Nasdaq:
OREX) today  announced  the  completion of the sale of the assets of its MedSurg
Industries,  Inc. subsidiary to a unit of Allegiance Healthcare  Corporation,  a
subsidiary of Allegiance Corporation, and the grant to Allegiance of a worldwide
exclusive  license  to  convert,  use and sell  products  made  with  Isolyser's
proprietary  degradable  materials  known as  OREX(R)  and  Enviroguard(TM)  for
distribution in the healthcare marketplace for a total of $31.3 million.

         Under the terms of the three-year License  Agreement,  Isolyser will be
the sole supplier to Allegiance of  dissolvable  material made from PVA, the raw
material used to manufacture  Isolyser's OREX(R) and  Enviroguard(TM)  products,
for use in the health care field.  Allegiance is committed to purchase a certain
quantity of Enviroguard(TM)  fabric.  Also under the Agreement,  Allegiance will
pay Isolyser a royalty  equal to a percentage  of the net sales price of product
sold by Allegiance to customers  who utilize the  product's  unique  dissolution
technology.

         Migo  Nalbantyan,  president and chief  executive  officer of Isolyser,
stated,  "We are  very  pleased  with  our  agreement  with  Allegiance  and are
committed to serve our health care customers with many  innovative new products.
Also, as a result of our much improved  financial  condition,  we are now better
positioned  to  accelerate  the strategic  growth of our  technology  into other
markets."

         "Allegiance  is  delighted  to add  Isolyser's  innovative  OREX(R) and
Enviroguard(TM)   technology  to  our  leading  line  of  surgical  apparel  and
supplies,"  said Mike Hudson,  president of  Allegiance's  Convertors and Custom
Sterile  businesses.  "We believe there is  significant  potential for a line of
clinically  superior single use medical  products that are also  environmentally
friendly.  The  combination of Allegiance's  Sales and Marketing  skills coupled
with Isolyser's  Research and Development  should result in increased demand for
the  Enviroguard(TM)  family of products.  We envision  this  product  family to
include:  nonwoven drapes and apparel,  textiles,  injection-molded  devices and
plastic type film  products.  Our intent is to cover a large  percentage  of the
disposable  products  used in the  Operating  Room,  Labor and Delivery and Cath
Lab."

         Both  companies are  finalizing a product  introduction,  marketing and
manufacturing  schedule  related  to the  introduction  of new  products.  It is
expected that this process will be completed over the next several months.

         Isolyser  will  use  funds  from the sale to  eliminate  the  remaining
balance of its revolving credit facility as well as provide additional operating
funds and capital for investment in its technology.

         MedSurg   Industries,   Inc.  assembles  and  distributes  sterile  and
non-sterile  procedure  trays  and  packs for  hospitals  and  other  healthcare
institutions.  Isolyser acquired MedSurg in 1993. Isolyser's OREX division, OREX
Technologies  International (OTI), possesses an extensive knowledge of polyvinyl
alcohol polymer and its associated properties and specializes in the development
and commercialization of materials that are engineered with characteristics that
facilitate their disposal  (bio-cycle).  OTI also has a range of capabilities in
the area of point-of-use waste treatment and disposal.

         Based    in    McGaw    Park,    Illinois,    Allegiance    Corporation
(www.allegiance.net),  is America's leading provider of health care products and
cost management services needed by hospitals,  laboratories and others in health
care.  Allegiance  is a subsidiary  of Cardinal  Health,  Inc.  (NYSE:  CAH), of
Dublin, Ohio. Cardinal is a leading provider of services supporting health care.
         This press release contains forward-looking statements made pursuant to
the safe harbor  provisions of the Private  Securities  Litigation Reform Act of
1995.  Such  statements  may be  significantly  affected  by  certain  risks and
uncertainties  described  in the  Company's  annual  report  on  Form  10-K  and
elsewhere,  including without limitation, the risks described in Risk Factors in
the Company's Annual Report on Form 10-K for the period ending December 31, 1998
under the captions  "Risks of New Products,"  "Manufacturing  and Supply Risks,"
"Protection   of   Technologies,"   "Competition,"   "Risks   of   Technological
Obsolescence,"  "Reliance Upon  Distributors,"  "Regulatory Risks," and "Product
Liability," and risks  associated with any failure of Isolyser to timely fulfill
Allegiance's purchase orders and otherwise perform Isolyser's  obligations under
the license agreement. The Company's actual results could differ materially from
such forward-looking statements.

         Isolyser has developed and manufactures OREX(R)  Degradables,  a series
of  ecologically  safe  products  made from a  thermoplastic,  hot water soluble
polymer  that can be  configured  into an array of  products  such as woven  and
nonwoven  fabrics,  film,  thermoformed and extruded items. The Company believes
that its  products  provide  protection  to  people  and the  environment  while
providing  cost-effective  solutions  to  the  problems  associated  with  waste
reduction  and  disposal.   The  Company  also  manufactures  infection  control
products.

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