this is a MONOGRAM - C&EN Global Enterprise (ACS Publications)

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this is a MONOGRAM IT IDENTIFIES A PERSON IN A SIMPLE WAY, SEPARATING HIM FROM THE CROWD.

this is a MANNOGRAM MANY PEOPLE IN LABORATORIES THE WORLD OVER USE THIS T-L-C PLATE TO IDENTIFY AND SEPARATE COMPOUNDS IN A VERY SIMPLE, EFFICIENT WAY!

it's the most in pre-coated Τ · deviates

ν \ # Yes, because a new era in Thin Layer Chromatography is start­ ing. Until now pre-coated TLC plates offered convenience, only. MANNOGRAM offers convenience AND accuracy. And repro­ ducibility, too. So that you can use it everywhere. In the research laboratory, in clinical laboratories and in Quality Control. To separate complicated, closely related mixtures. • The absorbent thickness of each MANNOGRAM plate is 250 microns. Always. Because it is electronically controlled. And it arrives highly activated in your laboratory. Because each plate is packed hermetically after activation. Just peel-off the plastic cover, and you have your high resolution plate ready to use. Our spot­ ting guide is supplied for additional convenience. • MANNOGRAM is available in sizes of 5 χ 20 and 20 χ 20 cm and with three absorbents: Silicagel (with inert polymer binder), Alumina and Microcrystalline Cellulose. With or without fluorescent indicator. Try our plate and you will never want to use anything else. And we have something nice for your Purchasing Depart­ ment too: Our low prices. For further information call us, or just drop us a postcard with your name and address, with the word: MANNOGRAM. Send It to:

MANN RESEARCH LABORATORIES DIVISION OF BECTON, DICKINSON AND COMPANY | B-P [

136 LIBERTY STREET, NEW YORK, N.Y. 10006 TELEPHONE: (212) 233-5863-CABLE: MANNLABS, N.Y, 24 C&EN