THE SMITH-HIEFTJE BACKGROUND CORRECTOR IS THE MOST SIGNIFICANT
ADVANCE IN ATOMIC ABSORPTION SINCE TWO-CHANNEL VIDEO A A . . . WHICH WAS THE MOST SIGNIFICANT ^ ADVANCE SINCE AEROSOL SAMPLING FOR FURNACE AA... WHICH ALL COME TO YOU FROM ONE COMPANY: ALLIED ANALYTICAL SYSTEMS. For maximum accuracy in AA results, you need the best in AA background correction. Your best choice is the Smith-Hieftje system, a standard feature on all AA's from Allied Analytical Systems. Honored with critical acclaim and prestigious awards (the latest two from the Society for Applied Spectroscopy), the Smith-Hieftje system surpasses both the D2 arc and Zeeman systems. For example: Figure 1 compares Smith-Hieftje, which corrects back-
ground down to baseline, with the D2 arc, which overcorrects the background below baseline. Compared to Zeeman, Smith-Hieftje is far less costly (the hollow cathode lamp is its own corrector), yet superior in performance. In technical achievement for AA's, Allied Analytical Systems sets the standard... once again. Write Allied Analytical Systems, One Burtt Road, Andover, M A 01810, or call toll-free 800-343-0322 (US. outside MA) or 617-470-1790.
CIRCLE 4 ON READER SERVICE CARD
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Se-S 009 3
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Figure 1: IL Video 22™ screen during the determination of Se in nickel alloy with S-H correction (left side) and D2 arc.
ALLIED Analytical Systems
