CHROMAT-A-TROL GRADIENT 6 SYSTEMS PROGRAMMER •
\
Generates continuous and step gradients • Battery backup for multiple file storage ·
24 programmable channels • Microprocessor based •
Simple operation
$1995.00 ELDEX LABORATORIES, INC
3551 HAVEN AVENUE, MENLO PARK, CA 94025 (41 5) 364-61 59 CIRCLE 64 ON READER SERVICE CARD
Disrupting? Emulsifying? Processing Cells/Tissues? Anyway you want to do it;
we
have the system.
The most complete offering of mechanical
For For
Oxygen Combustion Acid Digestion
For
Alkaline
Fusion
Standard procedures for sulfur and halogens depend upon Parr oxygen or peroxide combustion bombs for oxidizing solid or liquid samples rapidly with complete recovery of all combustion products; while Parr digestion and fusion bombs give the analyst several effective systems for dissolving silicates, ores and other difficult materials in strong acids or alkalis without losing trace constituents. For details, write or phone: Parr Instrument Company, Moline, Illinois 61265. 309/762-7716 CIRCLE 171 ON READER SERVICE CARD
1636 A
·
or
ultrasonic cell/tissue preparation systems from a single source. Complete systems, and a full line of accessories, to suit all homogenization, disruption, shearing, grinding, and emulsification applications— regardless of sample size. 25 years of experience. Send for Free Literature Today.
ANALYTICAL CHEMISTRY, VOL. 53, NO. 14, DECEMBER 1981
THE HOMOGENIZING PEOPLE
V|, HEAT STSTYMS
ultrasonics,
HEAT SYSTEMS —ULTRASONICS
incorporated
38 EAST MALL. PLAINVIEW, NEW YORK 11803 telephone 516/694-9555 telex 14-3101 ·
CIRCLE 214 ON READER SERVICE CARD
