AMERICAN INSTRUMENT CO., INC

BULLETIN 2182-8. HIGH-SPEED ANGLE CENTRIFUGE. A reliable, safe, and modern high-speed centrifuge with unique balancing mechanism that assures ... and ...
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FOR EXACTING TECHNICAL APPLICATIONS VITREOSIL* (vitreous silica) tubing

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Biochemical Instruments ELECTROPHORESIS APPARATUS The Urge Aminco-Stern research model (left) is intended for heavy work output, using a large variety of sample volumes. The Aminco Portable Apparatus (not shown) is designed for routine research and clinical use on a smaller scale. Both models constitute complete electrophoresis labora­ tories in single, compact units. They combine precise schlieren optics, automatic refrigeration, high-voltage supply, and rapid dialysis facilities. Accessories available for macro-preparative work, adsorption chromatography, diffusion measurements, and routine clinical analysis.

Chemical a n d catalytic inertness. Usefulness up to 1000°C a n d under ex­ treme thermal

shock.

Homogeneity a n d free­ dom from metallic impuri­ ties. Unusual e l e c t r i c a l resistivity. Best ultra-violet

BULLETINS 2175-B and 2281-B

transmission (in transmis­ W A R B U R G M A N O M E T R I C APPARATUS These greatly improved instruments represent the latest developments in manometric apparatus. The Aminco-Lardy Rotary Warburg Unit (right) can be rotated so that any manometer can be brought before the operator while he remains in a fixed position. Manometers may be read while in motion, or stopped individually. The Dual-shaker Apparatus (not shown) embodies t w o independent shaking mechanisms. Both types have wobble-free manometers, and are available in heated and refrigerated models.

sion quality). VITREOSIL tubing avail­ able promptly

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BULLETIN 2185-B

L I G H T - S C A T T E R I N G APPARATUS This compact and sensitive indicating and recording microphotometer di­ rectly measures from one micromicrolumen to ten lumens of scattered light in five decade ranges, ft has internal electronic stabilization, builtin d-c. amplifier, removable slit and optical systems, and outlet for recorder operation. Completely a-c. operated.

Stock sizes transparent up to 32 mm. bore, opaque to 4 ' . bore. Available for prompt shipment. Larger diameters can be supplied on special order. Can be had in all nor­ mal lengths. Send for Bulletin No. 9 for specifica­ tions and prices.

BULLETIN 2182-8

HIGH-SPEED ANGLE CENTRIFUGE A reliable, safe, and modern high-speed centrifuge with unique balancing mechanism that assures greater speed and safety. R.C.F. developed: 25,000 g at full speed of 14,000 rpm. Tube angle 3 2 ° . Interchangeable standardized rotors and maximum flexibility. Integral control panel and guard. Minimum servicing and low-cost maintenance.

VITREOSIL ί MOD TtAM MARK

.BULLETIN 150-B

AMERICAN INSTRUMENT CO., INC. Siittt

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THE THERMAL SYNDICATE, LTD.

Laboratory Instruments

SILVER SPRING, MD. — IN METROPOLITAN

WASHINGTON,

D. C.

14 BIXLEY HEATH

LYNBROOK, Ν. Υ.