If you use W h a t m a n TLC plates you may or m a y not become rich and famous. But you'll certainly do better TLC R e s u l t : no p r e c o n c e n t r a t i o n c sample; sample spotting time re duced by 85-90%; improved resc lution; high reproducibility of F values; higher loadings; etc., etc Linear Κ Plates. Innovative. Onl from Whatman.
Quantum = Whatman A couple of m o n t h s ago What man and Q u a n t u m Industries — the TLC people — got together to h e l p each o t h e r a n d y o u . N o w Q u a n t u m ' s h i g h technology TLC plates will be manufactured, qual ity controlled a n d marketed by Whatman. Worldwide. Nothing i m p o r t a n t w i l l be left u n d o n e . W h a t m a n p r o d u c t s d i d n ' t get w o r l d w i d e acceptance by leaving things u n d o n e . . . Very careful innovation One of the very attractive things about Q u a n t u m is its dedication to advanced TLC technology. That, now, will not only continue, it will have the strongest possible What man support. There will be n e w kinds of TLC, pioneering products and tech niques, strong technical support, aggressive R & D . High perform a n c e TLC, t r u e KCie r e v e r s e d phase TLC, and Linear Κ TLC are already available or just about to be. And, that's the tip of the iceberg. But nothing before its time. You can be assured that every W h a t m a n TLC p r o d u c t w h e n offered is the best it can be m a d e to be. A KCi8 R-P Plate O n e of t h e TLC i n n o v a t i o n s available n o w is t h e n e w KCie r e v e r s e d - p h a s e p r e c o a t e d glass plate: octadecylsilane chemically bonded to silica gel. The simplic ity of r e v e r s e d - p h a s e ( u s u a l l y two-component solvent systems, for e x a m p l e ) is w e l l - k n o w n to HPLC w o r k e r s w h o u s e Cie b o n d e d p h a s e s . KCis — w i t h higher speed (2 min per cm, avg.),
According to Stahl Of course W h a t m a n will con tinue to offer classical TLC plate as well as technically innovativ products. The K6 formulation, fc example: the fastest r u n n i n g pre coated hard surface silica gel glas p l a t e a v a i l a b l e . W i t h , usually about one-half the d e v e l o p m e r time on an extremely hard, abn sion resistant surface. More sens tive. And our K5: very probabl the most versatile precoated silic gel plate available.
better resolution and greater capacity. Easy visualization. Re producibility: average Rr deviation on KCie is 0.5%. Simple, close cor relation with HPLC b o n d e d Cie c o l u m n s . A t r u e Cie r e v e r s e d phase. And Linear Κ Another ready-now technical innovation from W h a t m a n TLC: preadsorbent TLC plates. A beau tifully s i m p l e i d e a b e a u t i f u l l y executed. Each Linear Κ plate has a silica gel (either of two formula t i o n s ) layer a n d a ( p r o p r i e t a r y formulation) p r e a d s o r b e n t spot ting area. Crude, dilute, organic or aqueous samples are absorbed by the spotting area a n d carried by the solvent w h i c h extracts a n d concentrates t h e m a n d presents them uniformly to the silica gel.
Whatman CIRCLE 234 O N READER SERVICE CARD 966 A ·
ANALYTICAL CHEMISTRY, VOL. 4 9 , NO. 12, OCTOBER
1977
Promises Whatman has been making fir products for 230 years. In some £ countries, in laboratories e v e r w h e r e , the n a m e W h a t m a n synonomous with quality, consi tency and reliability. So, too, wil TLC. Even in technical innovatic a Whatman product is, and will 1 in future, a W h a t m a n p r o d u c That is a promise. Old friends, new friends Not so incidentally, if you'i b e e n doing b u s i n e s s w i t h yoi (and our) f r i e n d s at Q u a n t u r nothing about that will, we tru! c h a n g e . You can do exactly tl same things with exactly the san people, in exactly the same way T h e r e is. t h o u g h , a n e w T l Products Guide. Send for yours Whatman Inc. · 9 Bridewell Pla Clifton, New Jersey 07014 Tel (201) 777-4825 · Telex 1334
