a new easy to use direct reading laboratory conductivity bridge
T h e YSI Model 31 Conductivity Bridge is brand new and specifically designed for laboratory use. Measure conductivity and resistivity with convenience, speed, and accuracy at 60 cycles or 1 kc. Use it over the entire range of electrolytic c o n d u c t ance from demineralized water to strong acids. A u n i q u e m u l t i p l i e r scale, overlapping the basic scale, permits fast, easy direct reading. A high intensity parallel bar electron ray tube provides easy, exact determination of null. Line cord and electrodes are located out of the way. Specifically designed for the laboratory, the YSI Model 31 is the most easy to use conductivity b r i d g e available. T h r e e new laboratory designed precision conductivity cells also are available. Ask us for full details.
YELLOW SPRINGS INSTRUMENT CO. YELLOW SPRINGS, O H I O
Circle No. 5 on Readers' Service Card
What's new in atomic absorption instrumentation?
Fisher Scientific Company's Jarrell-Ash Division What's new from Jarrell-Ash? Completely new models of the Atomsorb (shown above) and Dial-Atom: AA spectrophotometers that will set the standard for analytical versatility and convenience in the laboratory. The reasons are as simple as: (1) direct concentration readout; (2) multi-channel hollow-cathode source with builtin warm-up; (3) flame emission capability at no extra cost. And that's not all. There's also the famed Jarrell-Ash optics, unique Tri-Flame burner, and b u i l t - i n scale expansion. Considering Atomic Absorption instrumentation? Then remember there is something new—Fisher/Jarrell-Ash. For product literature, write Fisher Scientific Co., 1001 Fisher Building, Pittsburgh, Pa. 15219. Or call your representative for more details. J743
DIVISION OF FISHER SCIENTIFIC CO.
Circle No. 64 on Readers' Service Card
VOL. 4 1 , NO. 1, JANUARY 1969
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