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&Hx.fUetely Revised Chromatography Catalog

EM Biochemicals —Free 84-page Catalog

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Exclusive Spe­ cialties from E. Merck, Dann*J.!Ult.

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P r o d u c t s s u c h a s EM Quants'," t e s t s t r i p s for m e t a l ions, sulfite, nitrite a n d e t h e r peroxides; colorf a s t p H s t r i p s ; Titrisols'S s t a n d a r d s o l u t i o n s in :-~ ι f a n ι «> • ιι a m p o u l e s ; a n d u n i q u e speΛΓ· W\ àJJÎ?* r"· ». · II cialties s u c h as t h e desiccants, sulfuric acid and p h o s p h o r u s p e n t o x i d e , in solid, free-flowing form, a r e offered in this catalog. CIRCLE 4 2 7 ON READER SERVICE CARD

Instrumentation Chemicals Uvasols* s p e c i a l s o l v e n t s for spectroscopy, r e f e r e n c e s u b s t a n c e s for g a s c h r o matography, NMR standa r d s , d e u t e r a t e d comp o u n d s a n d Suprapur? high p u r i t y r e a g e n t s a r e offered in this l a r g e catalog. Import a n t for quality control a n d analytical research.

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