NEW PRODUCTS
through the cell, the amount of cur rent moving in an external flow circuit because of electrochemical action is a function of the amount of oxygen in a sample stream. The analyzer is available in single or multiple ranges from 0 to 10 p.p.m. to 0 to 1% oxygen. For normal operation, accuracy is ± 2 % at full scale and ± 1 % for short periods. P-44 Microchemistry
Centrifuge
Optical readers
The microchemistry centrifuge by Clay-Adams, Inc. provides centrifuga-
tion at 13,500 rpm, and accommodates both glass and disposable plastic tubes of 1 ml., 0.5 ml. and 0.25 ml. sizes. The machine runs quietly, the company says, owing to precision machining and balance of the eight place head, and shock-mounting of housing, motor, and head. Separate ventilating systems for head and motor chambers prevent over heating of the instrument or specimens. Safety is provided by an angle head cover in addition to the heavy gauge steel centrifuge cover which must be secured before the motor will start. A dial timer is set for one to thirty sec onds, after which an automatic brake stops the head in 60 seconds without any action on the operator's part. P-45
KRUGER A U T O M A T I C
CHEMICAL ANALYZER Performs continuous chemical analyses by titration or colorimetric methods, and presents the d a t a on a recorder. Spectrophotometer utilized for colori metric analyses. Servo controlled pump serves as titrator. Unitized design makes the analyzer adaptable to a variety of analyses of liquids and gases. Please send for
literature.
HAROLD KRUGER INSTRUMENTS BOX 164
S A N GABRIEL, CALIF.
O p t i c a l Readers
Two new optical readers are now be ing offered by Microchemical Special ties Co. They are designed to add to the versatility of the company's Quartz Helix Micro Balances, used for rapid and sterile weighings, surface studies, absorption or dehydration studies, and weight changes during chemical opera tions. For load capacities ranging from 2 milligrams to 20 grams, sample weight or change in sample weight may be de tected to 0.02%. P-46 Infrared
Detector
Westinghouse Research Laboratories announces development of a detector that can respond to about 5 X 10 -11
Greater Accuracy Throughout I a Series of Injections! HAMILTON SYRINGES with
CHANEY ADAPTORS With a C h a n e y A d a p t o r on a Hamilton Syringe you can easily maintain accuracy of 1/10 of one percent throughout a series of liquid deliveries, making your repetitive injections for analysis and study fast . . . reliable and accurate ! A Chaney Adaptor gives precise delivery of a precalibrated quantity of liquid. Adaptors are available on (1) the Hamilton Glass Beta Shielded Syringes, (2) the Hamilton Micro liter Syringes, and (3) as separate units on medical syringes. Syringe sizes: 30cc to .05cc. Order direct, or write today for literature and prices!
HAMILTON COMPANY, INC. 1134 Whitley · Whittier, California Dept. Β A Complete Line of Precision, Radiochemical hlendling Equipment
Circle No. 76-1 on Readers' Service Card, page 89 A 76 A
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ANALYTICAL CHEMISTRY
Circle No. 76-2 on Readers' Service Card, page 89 A
