Whatman Membranes. Performance. Reliability. Performance: I m p r o v e d h a n d l i n g characteristics, consistency of results t h r o u g h narrow pore size dist r i b u t i o n and minimal batch-to-batch v a r i a t i o n , easy autoclaving due to higher t e m p e r a t u r e stability, red u c t i o n of adverse effects f r o m extractables, and e l i m i n a t i o n of excessive s h r i n k i n g p r o b l e m s . High performance membranes —Whatman membranes. Reliability: Assured r e p r o d u c i b i l i t y t h r o u g h rigorous quality c o n t r o l for u n i f o r m i t y b e t w e e n lots, physical testing for thickness, w e t t i n g t i m e and w e i g h t ; performance assured by b u b b l e p o i n t testing and biological or particle challenges; testing for bacterial r e t e n t i o n , o p t i m u m recovery and grid line i n h i b i t i o n , and p y r o g e n i c i t y . High reliability membranes — Whatman membranes.
Whatman membranes: Cellulose nitrate and PTFE in a full range of pore sizes and diameters. W h i t e , black, g r e e n . Plain and g r i d d e d . Sterile m e m b r a n e s . A u t o clave packs. Filter holders . . . e v e r y t h i n g you n e e d . In p e r f o r m a n c e , reliability and in every quality aspect we t h i n k y o u ' l l f i n d W h a t m a n m e m b r a n e filters clearly superior t o t h e membranes y o u may be using now. Whatman membranes: Readily available f r o m a national n e t w o r k of laboratory supply dealers. Just call y o u r local dealer for o r d e r i n g i n f o r m a t i o n . For technical details contact W h a t m a n Laboratory Products Inc., W h a t m a n Paper D i v i s i o n , 9 Bridewell Place, C l i f t o n , New Jersey 07014. Tel: (201)773-5800.
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