HELLMA . . . tomorrow's designs today !
The Panalyzer breaks the price barrier. Complete x-ray spectroscopy systems for as low as $5,000. A new instrument that provides a simple non-destructive elemental analysis of solids, powders, slurries, and liquids via X-ray spectroscopy. The Panalyzer 4000 consists of a hand-held or bench mounted probe and an electronic console. It is low cost, easy to operate and compact . . . widely used in laboratory, on-line, and field operations. Special probe available for measuring Si, P, S, CI. Applications include accurate measurement of Metals, Coating Thick ness, Cement, Ores, Coal, Rubber, Plastics, Paper, Glass, Petro chemicals. Send for descriptive brochure.
Hellma—the largest assortment of highest precision glass and quartz cells. Standard · Flow-through • Constant-temperature Anaerobic · Special Designs Also available-ULTRAVIOLET LIGHT SOURCES Deuterium Lamps · Mercury Vapor Lamps Hollow Cathode Lamps · Power Supplies
HELLMA CELLS. INC.
ra
PANAMETRICS
Write for literature Box 544 Borough Hall Station Jamaica, New York 11424 Phone (212) 544-9534
221 Crescent St., Waltham, Mass. 02154 Tel: 617 899-2719
CIRCLE 1 5 4 O N READER SERVICE CARD CIRCLE 8 7 O N READER SERVICE CARD
VERSATILE DESICCANT
dsk
aboutP.D.A.S. itsC.H.E.A.R
(programmable data acquisition system)
DRIERITE is α low-cost, all-purpose anhydrous calcium sulfate used in desiccators, U-tubes, drying columns, d r y i n g tubes and l a r g e d r y i n g cabinets to d r y air and gases. DRIERITE is also i d e a l f o r drying organic liquids in either the liquid o r v a p o r phase.
(low-cost)
The moisture remaining in a gas a f t e r d r y i n g with DRIERITE amounts t o only 0 . 0 0 5 mg p e r liter. DRIERITE is a v a i l a b l e in t w o forms—Regular or I n d i c a t i n g — f r o m a l l leading L a b o r a t o r y Supply Dealers.
T h e E s t e r l i n e A n g u s D-2020 p r o g r a m m a b l e d a t a a c q u i s i t i o n s y s t e m : 5 t o 200 c h a n n e l s , p r o g r a m s w i t h s i m p l e s w i t c h e s , gives y o u d i g i t a l p r i n t - o u t or c o m p u t e r data
(or
both) — in
large
volumes
and
at
input
extreme
low c o s t . F i n d out a b o u t it N.O.W. ( s o o n ) . B o x 24,000, I n d i a n a p o l i s , I n d i a n a 46224. 3 1 7 / 2 4 4 - 7 6 1 1 .
REGULAR DRIERITE is constant in volume, inert e x c e p t t o w a r d w a t e r , insoluble in organic liquids a n d refrigerants, non-disintegrating non-wetting, non-poisonous, non-corrosive, r e p e a t e d l y r e g e n e r a t i v e , and non-channeling. INDICATING DRIERITE has a l l o f the properties of Regular DRIERITE, but is i m p r e g n a t e d with C.P. c o b a l t chloride a n d , hence, makes a clearly visible change f r o m blue when d r y t o pink when exhausted. SOLIDSUQUIDS-GASES-SOUDSUQUIDS-GASESSOLIDS
S
ESTERLINE ANGUS Division of Esterline Corporation
U
W. A. HAMMOND DRIERITE CO. Xenia, Ohio 45385
ESTERLINE
Data Recording Instruments CIRCLE 5 5 O N READER SERVICE CARD
124 A
•
ANALYTICAL CHEMISTRY, VOL. 44, NO. 4, APRIL 1972
®
< a => σ */> ο
DRIERITE
ο (Λ
> «Λ ΠΙ to
CO
iosS3SVo-sainonsonoss3SV3sainon-5gno
CIRCLE 8 2 O N READER SERVICE CARD
