analytical standards for c h r o m o t o g r a p h y
Spectro Grade Reagents GLC-UV-Fluorescence-IR
Agricultural
Amines
Chlorinated Hydrocarbons
Aldehydes
Pesticides
Amino Acids
Herbicides
Special Custom Synthesis
Fungicides
Sugars
Nematocides
Chemicals
unilab research corporation 1 2 2 0 sixth street b e r k e l e y California 94710
distributors
Automatic SAMPLER tor water
POLLUTION CONTROL T h i s S i g m a m o t o r p u m p is d e s i g n e d t o t a k e s a m p l e s p e r i o d i cally o n a p r o g r a m m e d b a s i s . S a m p l e s c a n b e d r a w n u p t o 18 f e e t by a t r o u b l e - f r e e p o s i t i v e d i s p l a c e m e n t t u b i n g p u m p . T h e n a t u r a l p u l s i n g a c t i o n k e e p s t h e l i n e clear a n d f l o w i n g . S m a l l fibers and particles d o not plug the t u b i n g .
Societa Italiana Chimici Via Luigi Pulci, 27 Rome, Italy Analytical Standards Ltd. Grona Gatan 31, Goteborg V. Sweden
M o d e l s a r e n o w a v a i l a b l e f o r b a t t e r y or 110 V o l t AC power— for a single 2-1/2 g a l . c o m p o s i t e s a m p l e , or 24 i n d i v i d u a l h o u r l y s a m p l e s . T h e l i g h t w e i g h t c a r r y i n g c a s e is w e a t h e r p r o o f .
Nuclear Services Ltd. 25 Great Strand Street Dublin 1, Ireland
C o m p l e t e l i t e r a t u r e is a v a i l a b l e .
Internacional Cientifica, S.A. Angel Del Campo 17A Mexico 8, D.F.
SIGMAMOTOR,
INC.
1 1 4 N . M a i n St. . M i d d l e p o r t , Ν . Υ . · P h o n e ( 7 1 6 ) 7 3 5 - 3 4 1 1 Circle No. 45 on Readers' Service Card
Circle No. 51 on Readers' Service Card
TIME TAPE
The NEW 4th edition of
REAGENT CHEMICALS, American Chemical Society Specifications
identifieati
prepared by The Committee on the all purpose, self-sticking, tape that solves every labeling problem Self-sticking Time Tape eliminates dangerous hand-to-mouth contact to protect against cross-infection. It is available in 17 colors, can be marked with pen or pencil, sticks to arry sur face (plastic, glass, metal, wood, paper, cloth), leaves no messy residue when removed, and withstands a temperature range of —70°F to +250°F. Supplied plain or imprinted to your specifications. Write for free literature. ^All Time Tape products are Bacteriostatic for your Safety
TIME ^»
AVAILABLE T H R O U G H LABORATORY A N D HOSPITAL DEALERS.
·
651 pages · Price: $14.00 Order from: Dept. Β Special Issues Sales American Chemical Society
P R O F E S S I O N A L T A P E CO., I N C .
1155 Sixteenth Street, N.W.
363 EAST BURLINGTON RIVERSIDE, ILLINOIS
Washington, D.C. 20036
Circle No. 34 on Readers' Service Card 114 A
Analytical Reagents is now available.
ANALYTICAL CHEMISTRY
ROAD 60546