HIGH TORQUE
STIRRERS •
Stepless, mechanically adjusted speed regulation 30-350 RPM 350-2600 RPM • No rheostat • Totally enclosed, non-sparking, induction-type motor—115 Volts. 60 Hz • Built-in speed indicator dial • Torque increases with decreasing speed • Flexible positioning • Cast aluminum housing • 2 hollow shafts for rapid stirring rod adjustment to any height » Rods up to 5 , 6 " diameter • Complete with chuck and key • Full year warranty
Available through most major Lab Supply Dealers
Cat. No. 4-741170 RZR-10 STIRRER
NEW OXYGEN ANALYZER WITH WIDE-RANGE RESPONSE
$119.00 Ask foi B U L L E T I N 181 A offering wide range of stirrers
PolyScience Corporation 6366 GROSS POINT RUAO'NILES ILLINOIS 60648 U SA 13121 647 0611
Cable POLYCORP
CIRCLE 174 O N READER SERVICE CARD
PARR
PELLET PRESS
PARR 2811
P E L L E T S . T A B L E T S o r W A F E R S f o r any i n v e s t i g a t i v e or test purpose can be made quickly and easily in this p o r t a b l e press w i t h o u t a heavy investment in t a b l e t mak ing machinery. Pellets are p r o d u c e d in polished stainless steel dies and e j e c t e d smoothly into a stain less receiver. Six d i f f e r e n t sizes, v a r y i n g from .1 18 to one-half inch diameter, can be p r o d u c e d in the same basic press using I n t e r c h a n g e a b l e punch and die sets. Specification
28Π gives complete
APPLIED ELECTROCHEMISTRY, INC.
details.
PARR INSTRUMENT
Monitor Oxygen Concentration in Laboratory Analysis, Pilot Plants, and Large-Scale Gas Processes The new ΑΕΙ Oxygen Analyzer pro vides immediate and direct oxygen measurements in partial pressures ranging from one to less than 10~'n atmospheres. This new instrument is particularly useful for optimization of combustion and oxidation-reduc tion processes through continuous monitoring of the oxidation-reduc tion potential of the process atmos phere. Unique Non-Consumable Ceramic Oxygen Sensor The new ΑΕΙ Oxygen Analyzer uses a totally electronic non-consumable ceramic sensor which requires no regular calibration and, unlike con ventional chemical or paramagnetic oxygen measurement devices, the sensor is unaffected by sulfur im purities and most corrosive gases. Comprehensive Instrument System The ΑΕΙ Oxygen Analyzer system has digital readout, recording and print out capabilities, and outputs for alarm or process control. A wide selection of accessories is available for lab oratory applications. Contact us to day for a detailed brochure.
COMPANY
735 Ν. Pastoria Avenue Sunnyvalp. Calif. 94086 Phone 408-732-7880
211 Fifty-Third St. Moline, III. 61265 Telephone ( 3 0 9 ) 762-7716 CIRCLE 1 6 4 O N READER SERVICE CARD
CIRCLE 10 O N READER SERVICE CARD
ANALYTICAL CHEMISTRY, VOL. 44, NO. 6, MAY 1972
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