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TOMORROW'S SAMPLES Be ready for the changes that are sure to come—in the quantity, labelling, quench, and composition of your liquid scintillation samples. Be ready with a Unilux® II System. It's easily upgradable to let you plan ahead.
How many counting channels ? How many do you neednow? With Unilux II Systems, you can start with one, two, or three independent scalers and analyzers. Upgrade when your work demands more from your system. More growth potential: Separate gain controls on each analyzer channel, separate pre-count and low-count reject controls on each scaler, and group sample counting—all simplify multi-label counting and multiple user operation. Quench correction? Select the method you need when you need it. If it's internal standards, order Unilux II without external standardization. For fast, automatic quench determination, order GeometryOptimized barium-133. It's the external standard that quenches just like C 14 and H 3 and is less sample-volume-dependent than any other (and you can add it now or later). When your samples become more complex or have a wide range of quenching, add our "calculator-with-the-memory." It develops a channels ratio on the external standard—the most accurate, automatic quench-correction technique available. Portability: A Unilux II Bench-Top System can be portable too—now or later. Just specify the mobile cart with its convenient, built-in desk-shelf and storage drawer. Data readout : Specify the one you want —a simple printing lister, electric typewriter, or Teletypewriter®. (Direct output to a card punch comes with every system.) Any combination, any time. Invest in tomorrow's counting needs today. Find out about modular Unilux II systems. Call your Nuclear-Chicago sales engineer or write directly to us.
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NUCLEAR-CHICAGO CORPORATION A SUBSIDIARY OF G. D. S E A R L E &. CO.
351 E. Howard Ave., Des Plaines, III. 60018 U.S.A. Donker Curtiusstraat 7, Amsterdam W. Circle No. 142 on Readers' Service Card
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ANALYTICAL CHEMISTRY
