What keeps Perkin-Elmer's Model 900 Gas Chromatograph so new and so far ahead?

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You probably know the reputation earned by Perkin-Elmer's Model 900 Gas Chromatograph. It's gen­erally regarded as the best and the

most business-l ike GC instrument in the wor ld . It got that way be­cause the most exper ienced staff of GC development engineers in the business designed it without compromises, wi thout cost cutt ing, with no easy ways out.

What keeps the Model 900 at the top is that it changes to incor­porate the newest in GC technol­ogy. Its appearance hasn't changed much. But inside and out our en­gineers constantly embody the lat­est and best features in the state-of-the-art. Recent major changes i n c l u d e such fea tu res as d i r e c t reading controls which require no conversion charts; the parametric amplif ier (with the widest dynamic range in the business) now has a 10 volt output for computer com­p a t i b i l i t y ; i n t e g r a t e d c i r c u i t s fo r electronic rel iabil i ty; an advanced

toroidal oven designed for close t h e r m a l c o u p l i n g of oven and co lumn; sol id state, al l-electronic t imers, and many more.

O p e r a t i o n a l l y y o u ' l l f i n d the Model 900 as versati le as a GC can be, yet incredibly simple to use. Controls are designed so that an­alytical condit ions can be repro­duced exactly for runs which are days or weeks apart. And anyone can do it.

Our new brochure describes what we have recently done to the Mode l 900 to g ive you qua l i t y where it counts. . . in your analytical results.

For your copy wri te to Perkin-Elmer Corporat ion, Instrument Divi­sion, 702 Main Avenue, Norwalk, Conn. 06852.

PERKIN-ELMER

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Circle No. 142 on Readers' Service Card

ANALYTICAL CHEMISTRY, VOL. 42, NO. 14, DECEMBER 1970 · 65 A