Product Capsules Electrochemistry systems. Offers circuitry and control functions needed to perform commonly used electrochemical techniques. A 152 Electrophoresis. Apparatus with cooled platen for two-dimensional TLC/TLE. Catalog. A 175 Evaporators. Rotary vacuum unit has high torque motor, 30-350 rpm range, stepless speed control. Bulletin. A 162
Analytical & Preparative
GEL ELECTROPHORESIS Buchler provides these important, temperature controlled instruments for separating proteins, hemoglobin, albumin, enzymes and other compounds using polyacrylamide or another supporting medium. For complete information and prices, write for appropriate bulletin.
Filter aids. New catalog features inline filter unit, filter papers, other filter aids. A 164
POLYANALYST
Filter papers. Catalog features all types of filters—seed germination, glass fiber, hydrophobic. A 170
Basic analytical unit for separation and destaining. Migration takes place in 12 sample columns. Request Bulletin #3-1750.
Filters. Fused glass capillary arrays with pore diameters from 2 to 100 microns. Available coated or uncoated. A 24
POLY-PREP*100&200 Preparative instrument for continuous fractionation and elution. Request Bulletin #3-1780A.
Filters. New equilibrium dialysis system speeds up handling and determination of binding parameters. A 115
BUCHLER INSTRUMENTS DIVISION NUCLEAR-CHICAGO CORP. A SLBSIS'Anr OF C 3 R î E A R L E ' S CO
Fluorometers, ratio. Highly sensitive unit permits detection of concentrations as low as 0.1 ppb of quinine sulphate. A 73 Fraction collectors. 4 components comprise an automatic system for monitoring and collecting liquid effluent. A 27 Gases. Info on gases with exact purity levels. A4
1327 SIXTEENTH STREET, FORT LEE, NEW JERSEY, 07024 CIRCLE 2 2 O N READER SERVICE CARD
The preferred column tubing NOW A V A I L A B L E FOR I M M E D I A T E SHIPMENT
Gel scanners. High resolution UV unit allows pushbutton scanning of polyacrylamide gels for RNA and protein work. A 102 Hydrogen generators. Generates ultrapure hydrogen at 150 ml/min. from distilled water at a 1.000:1 volumetric ratio, with fewer than 10 ppb impurities. A 128 Incubators. Low-temperature units and BOD cabinets feature 17 cult, capacity, solid state controls, temperature range from - 1 0 ° to 50°C, Models available for photosynthesis and diurnal stimulation. A157 Integrators. GC unit with automatic baseline capacity. Brochure. A 89 Integrators. Electronic digital unit suitable for GC, standard, and high speed liquid chromatography. Catalog. A 97
HANDY & HARMAN TUBE CO.
CHROMAT
I.D. Now! Chromât I.D. Tubing is available in pre-packaged boxes for immediate shipment. Available on spools in lengths from 100' to 1000' in sizes . 0 6 2 " O.D. χ . 0 1 0 " , . 0 2 0 " , .030" I.D. Other sizes up to .625" O.D. also available.
A Handy and Harman Company
HANDY & HARMAN TUBE COMPANY Norristown, Pa. 19404 Telephone (215)275-2734 Outside U . S . A . : Handy & Harman Tube Co. Export Dept. 1010 Schaff Bldg. Phila. Pa. 19102. Cable-Machinex. Telex 845-388 CIRCLE 92 ON READER SERVICE CARD ANALYTICAL CHEMISTRY, VOL. 4 4 , NO. 6, MAY 1972
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