Application for delisting of the shares

PRESS RELEASE, 10 September 2003 · Application for delisting of the shares · Redemption of minority shares initiated FSII Sweden Holdings AB ("Fisher Sweden"), which owns 93.6 per cent of the shares in Perbio Science has requested the remaining shareholders in Perbio Science to sell their shares in accordance with the regulations in the Swedish Companies Act concerning redemption of the minority shares. As a result hereof and the fact that the requirements for a suitable trade of the shares in Perbio Science at the Stockholm Stock Exchange no longer apply, Perbio Science has requested that the Stockholm Stock Exchange shall delist the shares from trading. In accordance with an agreement with the Exchange, the last day of trading for the shares in Perbio Science is on 24 September 2003. Thus, the delisting of the share will occur on 25 September 2003. Further information Leland G Foster, CEO phone +1 435 757 6432 or Claes Wenthzel, Vice President & CFO phone: +46 42 26 90 92 or +46 70 862 01 22 Perbio Science AB (publ) is a listed Swedish biotech company with research institutions, pharmaceutical companies and diagnostic companies as its customers. The USA accounts for the bulk of its business. Perbio Science supplies products, systems and services for the study and production of proteins and develops products in the Bioresearch, Cell Culture and Medical Device fields. The group has 1,353 employees and offices in Sweden, the USA and a number of other countries. Its head office is in Helsingborg, Sweden. More information regarding Perbio Science can be found at www.perbio.com ------------------------------------------------------------ This information was brought to you by Waymaker http://www.waymaker.net The following files are available for download: http://www.waymaker.net/bitonline/2003/09/10/20030910BIT01130/wkr0001.doc http://www.waymaker.net/bitonline/2003/09/10/20030910BIT01130/wkr0002.pdf