New!
TriCarb Automatic Sample Oxidizer Combusts 40 3H Samples an hour for Liquid Scintillation Counting
Say goodbye to time-consuming and troublesome methods of preparing tritium samples for liquid scintillation counting. The new Model 300 Tri-Carb Sample Oxidizer does the work automatically, at a rate that makes the method practical for virtually every experiment involving tritium as a tracer. The Tri-Carb Sample Oxidizer provides recoveries of 97-99%+, with routine achievement of 1 % standard deviation. (This can be reduced to 0.3% in many cases, making the deviation essentially that resulting from dispensing errors and counting statistics.) Count rates from the same sample are 25% to 100% higher than those obtained with classical methods. The new instrument, based on the Kaartinen patents*, combines the speed of closed system flame combustion with the advantage of unlimited tritium sample size.
The only manual operations are positioning of the sample and counting vial, and pushbutton initiation of the combustion process. The balance of the c y c l e including addition of scintillator—is carried out through automatic sequencing within the Sample Oxidizer. Nitrogen purging is used to eliminate oxygen quenching, and because no manual handling is necessary during the cycle, the method is relatively insensitive to the working habits of the operator. Thus, a high degree of sample standardization is achieved. For complete specifications write for Bulletin 300Q to Packard Instrument Company, Inc., 2200 Warrenville Road, Downers Grove, Illinois 60515 or Packard Instrument International S.A., Talstrasse 39, 8001 Zurich, Switzerland. *Dr. Niilo Kaartinen, Dept. of Physiology, University of Turku, Finland
A SUBSIDIARY OF AMBAC INDUSTRIES, INC. Circle No. 64 on Readers' Service Card 12 A
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ANALYTICAL CHEMISTRY
