W h y did Varian M.A.T outsell all competitors in 1976? Last year, Varian M.A.T.'s high resolution mass spectrometer sales grew to the point where more Varian systems were sold throughout the U.S. than any other brand. Our customers tell us that the primary reason we were selected, time-after-time, is their overall satisfaction with system performance—the result of more than 25 years of unwavering dedication to advancing the state-of-the-art in mass spectrometry.
This dedication has led to developments such as: • Turbomolecular pumps for • Proven CI/ΕΙ source for optimized ion exceptionally clean background source chamber geometry in both modes, with dual electronic controls • Proven FD/FI/EI ion source • "DADI" metastable analysis • Temperature-programmable • Field-regulated magnets direct probe
A. Pictured is our Model M A T . 311A — one of our most popular high resolution systems. Our other high resolution sector field instruments include the M.A.T. 731 ultra high resolution mass spectrometer with both photographic and electrical recording and the highly flexible M.A.T. 112S reverse geometry GC/MS instrument. CI/ΕΙ and FD/FI/EI ion sources are available for all these instruments. B. Turbomolecular pumps. C. Temperature-programmable direct probe. D. FD/FI/EI ion source.
We will continue offering the mass spectrometry community quality without compromise in instruments that provide a significant technological edge. Give yourself that edge. Send today for our informative new 36-page catalog. Or contact us for a demonstration. Varian M.A.T. Mass Spectrometry, 25 Hanover Road, Florham Park, New Jersey 07932, Telephone (201) 822-3700 «Varian M.A.T. GmbH, Postfach 14 4062, Barkhausenstr. 2, 2800 Bremen 10, West Germany, Tel. (0421) 54931. CIRCLE 225 ON READER SERVICE CARD
1044 A · ANALYTICAL CHEMISTRY, VOL. 49, NO. 12, OCTOBER 1977
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