dual channel low background autoscanner the two channels without running off the recording top or Model 880-D Dual Channel Low Background Autoscanner yielding a peak mix so small it cannot be interpreted. features two separate channels, both taking their input from • Texas Instrument dual channel galvanometric-type rethe common detector. There is a common high voltage supply corder provides two 5" charts on one 10" strip • May be used for the detecting chambers. Pulses from the chambers are summed under the condition that they not be coincident in to examine simultaneously intense and weak areas of radioactivity in the presence of each time, and are then supplied to both channels of analysis. ——. other • Completely transistorized • Automatic shut-off of gas and Each channel has independent power • Better than 2% accuracy range and time constant selectors of count rate on all ranges • Comand an i n d e p e n d e n t r e c o r d e r pact, one unit system adaptable channel, In operation, for example, to direct digital quantitation. one channel may be set with a high For complete specifications on range and short t i m e c o n s t a n t Model 880-D Dual Channel Low whilethe other channel may be set Background Autoscanner and the for a low range and long time conModel 885 Glass Plate Scanner stant. The net effect is that where (shown at left), send for new inthere are intense areas of radioformative brochure. For immediate activity interspersed with weak information and/or a quotation, areas on the paper chromatogram, Designed as an accessory to operate with Model call your nearest Vanguard office. each will be presented on one of 880-D, the Model 885 Glass Plate Scanner provides a convenient, low cost system to assay TLC glass plates with unequaled accuracy and sensitivity.
VANGUARD INSTRUMENT CORPORATION Designers and Manufacturers of Precision Instrumentation for Research · P. O. Box 244, LaGrange, Illinois 60526, FL 2-1600 New York, 103 Park Ave., Suite 1204, TN 7-1998 · Boston, 1156 Broadway, Somerville, 491-4589 San Francisco, 115 New Montgomery St., EX 2-0511 · Baltimore, 217 North Calvert St., 727-3666 Houston, 1213 Capitol Ave., CA 5-5757 · Los Angeles, 9460 Wilshire Blvd., Suite 414, Beverly Hills, 275-3567 Circle No. 167 on Readers' Service Card 118 A
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ANALYTICAL CHEMISTRY
