ANALYTICAL CHEMISTRY the r a p i d advances b e i n g m a d e in a n a l y t i c a l methods a n d techniques, workers in the f i e l d need r e a d y references t o the latest commercial technical information as w e l l as t o results o f n e w research.
ANALYTICAL REVIEWS
Through its publication o f o r i g i n a l research articles, ANALYTICAL CHEMISTRY brings the analyst results o f research; through advertisements, t h e r e a d e r receives the latest commercial information.
ADVERTISED PRODUCTS
It seems a p p r o p r i a t e that the issue which reviews research progress should present a guide t o recent commercial developments.
GUIDE This guide a p p e a r s o n the following p a g e s in the f o r m o f a n i n d e x o f products advertised during t h e previous y e a r . By use o f this i n d e x , readers c a n locate quickly advertisements they recall seeing during t h e y e a r . By reexamining these advertisements, readers can o b t a i n useful information a b o u t new a n d i m p r o v e d instruments, equipment, a p p a ratus, chemicals, reagents, materials, a n d furnishings. Those w h o desire more information, m a y use the convenient inquiry cards o n p a g e 5 3 A .
In brief the advertised products guide gives you
1. In a d d i t i o n t o the ADVERTISED PRODUCTS GUIDE, there a r e also included the names a n d addresses of the advertisers, together with a b r i e f outline o f their products o r services. This information will a i d those w h o p r e f e r t o request information directly from the advertiser using their own company letterh e a d . The C O M P A N Y DIRECTORY listing begins on p a g e 57A.
Index o f products advertised during the past y e a r — q u i c k a n d easy t o use
2. Company directory—tells w h o they a r e , w h e r e they a r e l o c a t e d , w h a t they make a n d sell
VOL. 2 9 , NO. 4 , APRIL 1957
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37A
