.®
ΈΜ Reagents'
Ε . ΜΈΒΟΚ, D A R M S T A D T , G E R M A N Y
The right w a y to optimal separations Preparations for
Thin-layer chromatography Preparative layer chromatography Column chromatography H i g h performance liquid c h r o m a t o g r a p h y Gel c h r o m a t o g r a p h y Cellulose derivative ion exchangers
Silica gels 4 0 , 6 0 , 100 (Â p o r e d i a m e t e r ) M a c r o p o r o u s Silica gels, Merckogel® SI {max. 2 5 0 0 0 Â) S i l a n i z e d Silica g e l (hydrophobic)
A l u m i n u m Oxide Type Β a n d Τ K i e s e l g u h r . Cellulose . Cellulose i o n e x c h a n g e r s Merckosorb® . Perisorb® . Merckogel® O R - P V A
E M Laboratories, Inc., associate of E . M e r c k , D a r m s t a d t , G e r m a n y 500 Executive Boulevard, Elmsford, N e w York 10523 · Tel: 914/592-4660 CIRCLE 6 6 O N READER SERVICE CARD
ANALYTICAL CHEMISTRY, VOL. 47, NO. 9, AUGUST 1975 · 801 A
