V O L U M E 2 3 , N O . 10, O C T O B E R 1 9 5 1
45 A
THE BASIC TOOLS FOR EVERY BIOCHEMICAL LABORATORY
S»*
FOR EXACTING TECHNICAL APPLICATIONS VITREOSIL* (vitreous silica) tubing
possesses
many
characteristics you seek. A few of its properties a r e :
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
from
stock in four qualities. TRANSPARENT-SAND SURFACE, GLAZED* SATIN SURFACE
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
191»
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THE THERMAL SYNDICATE, LTD.
Laboratory Instruments
SILVER SPRING, MD. — IN METROPOLITAN
WASHINGTON,
D. C.
14 BIXLEY HEATH
LYNBROOK, Ν. Υ.
