New Products Column electrophoresis cell, EC250, accepts up to 12 gel columns per separation. Standard glass column has five-mm id and migration length of eight cm; nonstandard columns can be ordered. The complete unit occupies only 28 in. 2 of lab bench space and sells for $185. E-C Apparatus Corp. 215382-9100 439
FOR SALE 4 5 years e x p e r i e n c e — $ 5 8 5 w e t h r o w in the G C . . . Free.
Cell disruption bomb provides complete equipment for cell disruption and tissue homogenization using the explosive decompression technique. Action can be varied from highly vigorous to mild enough to selectively rupture only certain cell membranes. A nitrogen blanket prevents oxidation; no heat is generated or applied. $723. Parr Instrument Co. 309-762-7716 440
Binocular image-shearing measuring microscope is made by putting an image-shearing module between the objective lens and the binocular viewing head. This instrument provides digital readout and an accessory device to accomplish direct dimensional readout and printout. Accuracies from at least 2.5 to 0.1 micron or 0.0001 to 0.000004 in. are possible depending on the objective lens in use. $1600 to $2500. Vickers Instruments, Inc. 617-3246666 441
Chemists don't buy a gas chromatograph, they buy solutions to problems. Just how well a gas chromatograph solves problems is determined not only by the instrument's inherent capabilities, but by the comprehensive support that backs up those capabilities. The technical competence of Carle Instrument's $585 M o d e l 8000 Basic™ Gas Chromatograph is w e l l established. There are hundreds in use all over the w o r l d . Behind our technology is a total of 45 years of gas chromatography application experience — yours to draw on simply by picking up the phone. W e pride ourselves on being shirt-sleeve chromatographers. When that phone rings, we provide solutions ranging from syringe selection to the most sophisticated multi-component gas analysis.
Model 67 digital concentration readout operates as a linear/ + log/—log display device on 1-V or 100-mV input and can be used with Turner Models 330 and 350; B&L Spectronic 20; P-E Model 139; Coleman Models 101, 111, 124, 44, Junior II and ll-A, etc. Nixie readout (range from 0000 to 1999) gives transmittance, absorbance, or concentration of either. The unit also provides negative log response for color reduction studies. $695. A 10-mV input model is also available. Arthur H. Thomas Co. 215-627-5600 442
Using this shirt-sleeve experience to carefully pick and choose, Carle offers a complete line of field-proven chromatography accessories right from stock. Columns, fittings, valves, pressure regulators. A convenient, single source for all of your Basic™ Gas Chromatograph needs, both special and routine. W r i t e today for detailed literature on our $585 M o d e l 8000 Basic™ Gas Chromatograph and chromatography accessories. Better yet, put in a collect call to our Vice President, Bill Butz (714) 879-9900. He'd like to hear from y o u .
C A R L E I N S T R U M E N T S , I IMC
1141 East Ash Avenue, Fullerton, California 92631,(714) 879-9900
Circle No. 36 on Readers' Service Card
ANALYTICAL CHEMISTRY, VOL. 43, NO. 4, APRIL 1971
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