GELMAN
Analytical Chemistry
Now available: the new Photovolt catalogue
Membrane
Volume 46, No. 10, August 1974
Laboratory Guide
FILTERS
to I n s t r u m e n t s , E q u i p m e n t , and C h e m i c a l s
Solve Your Filtration Problems I
Editorial Manager Arthur Poulos Editorial Assistant Joanne Mullican Production Manager Bacil Guiley Advisory Committee E.E. Fleck Edward C. Knoblock John K. Taylor
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AMERICAN CHEMICAL SOCIETY 1155 16th St., N.W., Washington, D.C. 20036
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Analytical Chemistry produced under the direction of Books and Journals Division
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Director John Κ Crum Assistant to the Director Ruth Reynard
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Laboratory Guide produced under the direction of Division of Public Affairs and Communication
Director Richard L. Kenyon
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Copyright 1974 by the A m e r i c a n C h e m i c a l Society The American Chemical Society assumes no re sponsibility for the statements and opinions advanced by contributors to its publications. Views expressed in the editorials are those of the editors and do not necessarily represent the official position of the American Chemical Society. 1974 Subscription Rates 1 yr. 2 yr.
F e a t u r i n g t h e new Automatic Karl Fischer Titrator, A q u a t e s t II. A c o m p l e t e line of pH meters de s i g n e d and p r i c e d for a p p l i c a t i o n s rang ing f r o m r o u t i n e to t h e m o s t s o p h i s t i c a t e d . Also pH m e t e r testers and pH electrodes. The versatile TLC Densitometer. Others for e l e c t r o p h o r e s i s , c h r o m a t o g raphy, X-ray, p r i n t i n g and p r o c e s s i n g . Completely a u t o m a t i c Enzyme Rate Analyzers for STAT or r o u t i n e assays. Reflection Meters gloss m e a s u r e m e n t s .
for
color
and
A wide range of high-sensitivity P h o t o m e t e r s , laboratory Recorders, C o l o r i m e t e r s , Fluorescence meters, S p e c t r o p h o t o m e t e r cells, disposable cuvettes. To get your free copy, c i r c l e reader c a r d # 657.
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Sizes are available to fit most e q u i p m e n t . T e c h n i c a l assist ance for all filtration problems is p r o v i d e d t h r o u g h Gelman Technical Representatives and a free Consultation Service. Write For Information Now.
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1974
LABORATORY
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