Product Capsules Spectrophotometers, UV/VIS. Unit features 5-position cell programmer, multizero multi-range modules, tem perature readout, wavelength program mer. A 217
New Price List!
Materials for: Ion exchange, Gel chromatography, Adsorption, Gel electrophoresis, Hollow fiber technique. Columns and Stable isotopes.
Spectrophotometers, visible. Wave length range is 346-600 nm, extendable to 950 nm with an inexpensive photo tube and filter accessory. A 27 Spectrophotometers, visible. Sam pling versatility and performance at low cost. Accepts virtually any test tube or cell. Three interchangeable sample compartments. A 28 Supply house. 1,424 page catalog available on letterhead request. A 202 Syringes. Inject samples at 0.1 μ\ with new, all-metal, sub-microliter liquid in jector. Catalog. A 96 Thermal analyzers. System can be hooked up with computers, teleprinter, has flame ionization detection capabili ties. A 50 Timers. Six decade preset 10 MHz scaler, synchronized start. A 138 Titrators. Automatic unit features simple programming controls. Bro chure. A 140 Towels. Lintless, highly absorbent towels for cleaning and polishing. Sam ple. A 187 Tubing. Specially processed standard vinyl tubing cut to 15" lengths, with color-coded wishbone bridges. Catalog. A 63
UV monitors. New absorbance detec tor gives superior resolution, detects very low concentrations, gives easily quantifiable curves. Bulletin. A 35 Voltmeters. New, autoranging, digital multimeter for in-probe display is bat tery operated, has high-speed readout. A 122 X-ray analyzers. System based on en ergy dispersion rather than wave length dispersion. Simultaneous analy sis of all elements from sodium thru uranium. Brochure. A 64
Bio-Rad's Price List X is the most detailed guide published a n y w h e r e on m a t e r i a l s for the techniques listed above. New items featured in Price List X include Hollow Fiber Devices for desalting, concentrating and fractionating proteins, enzymes, viruses and othei b i o m o l e c u l e s .
You'll also find 3 new pages on gel intermediates for a f f i n i t y chromatog raphy and com plete details on materials and equipment for gel electrophoresis. A new applications index and a new easy-to-use for mat makes X our most useful cat alog yet. For your FREE copy, contact:
BIO-RAD Laboratories 32nd & Griffin Ave.. Richmond, CA 94804, Phone (415) 234-4130 Also in: Rockville Centre, Ν. Υ.: St. Albans. England; Milano; Munich CIRCLE 26 ON READER SERVICE CARD
Shandon gets to the bottom of your chromatography tank problems The bottom of a Shandon Model 500 Panglas* Chromatank' is different because it's absolutely flat. Press molding eliminates the mound found at the bottom of ordinary tanks, giving you an even distribu tion of solvent throughout the tank and saving sol vent, especially in ascending techniques. Press molding also gives the Panglas Chromatank stronger corners and heavier walls. It's made entirely of glass, without metal or plastic fittings, to eliminate solvent contamination. The Model 500 is the largest tank of its kind, measuring 20" χ 8" χ 22" high, accommodating either sheets or strips for ascending or descending chromatography. It will also accept 46 cm by 57 cm sheets making it ideal for two-way chromatography. For more information, write for Bulletin L383, Shandon Southern Instru ments, Inc., 515 Broad Street, Sewickley, Pa. 15143 (Pittsburgh District).
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CIRCLE 194 ON READER SERVICE CARD A N A L Y T I C A L CHEMISTRY, VOL. 4 4 , NO. 1 1 , SEPTEMBER 1 9 7 2
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