In G.C., you need widest dynamic range, lowest noise and drift, column/detector versatility. Get them all with the Model 900. The easy-to-operate Perkin-Elmer Model 900 is for the analyst who wants the best and most businesslike G. C. available. It literally has everything you need today—and sets the standards for tomorrow. Look at these features: All analytical conditions are optimized for any type of sample you may encounter. The unique amplifier unq u e s t i o n a b l y provides the widest dynamic range in the business, for ease in interfacing the instrument with fastmoving computers. The Model 900, in-
deed, has the highest effective sensitivity —the lowest noise and drift—of any gas chromatograph going. In the oven, there's dual column versatility, with simultaneous use of the most proven types of G.C. detectors, capable of being paired in all advantageous combinations. You get a truly controlled range of column temperatures (from a cryogenic —65°C, to 400°C). Then add the total temperature control system, with four separate temperature zones, featuring a unique
separate insulating buffer area between columns and detectors. Temperatures are directly calibrated on column oven dials, with zero error resettability—plus selectable temperature programming. O p e r a t i o n is f u l l y a u t o m a t i c , providing the most useful, repeatable separations of any G. C. For even more detailed information, write on your company letterhead, to: Instrument Division, Perkin-Elmer Corporation, 702 Main Avenue, Norwalk, Connecticut 0 6 8 5 2 , or your nearest Perkin-Elmer office.
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ANALYTICAL CHEMISTRY
