HITACHI SCIENTIFIC conventional AA systems to change heads is tota...

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Hitachi has just improved AA background correction by 500%.

Guaranteed. Zeeman Flame and Flameless Atomic Absorption Hitachi has just made a technological leap, incorporating the Polarized Zeeman Effect with a combined Flame and Flameless Atomic Absorption Spectrophotometer. Because of this, chemical, ionization and spectral interferences are reduced to an incredibly low level—typically two to five times better than the industry's present state-of-the-art AA units. Detection limits are typically increased 200% over the conventional flame. Our Zeeman AA Spectrophotometer is the only one with a true double beam flame. Because the Flame and Flameless furnace operate in tandem, the time needed

in conventional AA systems to change heads is totally eliminated. Baseline drift and noise levels are reduced by 200%. And since the system is completely computerized, you get fast and easy programming and complete data processing. For free literature and a demonstration of how the Hitachi Polarized Zeeman Flame and Flameless AA Spectrophotometer can give you better results, easier, write or call Hitachi Scientific Instruments, 460 E. Middlefield Rd., Mountain View, CA 94043. (415) 969-1100. We think you'll be impressed. In fact, we guarantee it.

HITACHI SCIENTIFIC INSTRUMENTS Nissel Sangyo America, Ltd. Analytical Instruments Department

Sales and service in the U.S. for over 20 years through 12 locations in the U.S. and Canada. Circle 109 for literature/prices. Circle 11 0 for demonstration. ANALYTICAL CHEMISTRY, VOL. 53, NO. 7, JUNE 1981 · 865 A