WESCAN's Model 212
Conductivity Meter
Little LC innovations to make your work easier. A. Column switching valves. You don't need wrenches to substitute one column for another one that's used for a different method. Just turn the valve handle back and forth. Type 70 stainless steel valves, manual or auto matic, cost S298 to S500 in the U.S. B. Solvent selection valves. Simply turn a valve handle to connect the pump inlet to different solvents — as many as six. With these Teflon valves you can easily switch between several mobile phases used for different methods. And during methods develop ment, you can try out different mobile phases quickly. Type 50 valves come in manual and automatic models. U.S. prices: $80toS322.
C. Column inlet filter. An inexpensive way to prevent valuable analytical columns from plugging. Connects between sample injection val.ve and column. No loss of resolution. U.S. prices: S40 for filter holder, $20 for five 2 μίτι replaceable filter elements. More handy accessories. D. Pressure relief valves protect expensive equipment. E. Replaceable cartridge-type guard columns cap ture strongly adsorbed compounds. We also have not-so-simple equipment like advanced sample injectors and high-quality analytical columns. For all the details contact Rheodyne, Inc., 2809 Tenth St., Berkeley, California 94710, U.S.A. Phone (415) 548-5374.
RHEODYNE THE LC CONNECTION COMPANY CIRCLE 168 ON READER SERVICE CARD
306 A · ANALYTICAL CHEMISTRY, VOL. 52, NO. 2, FEBRUARY 1980
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Direct Reading Digital Display Wide Range Zero Suppression Analog Recorder Output
The WESCAN Model 212 C o n ductivity Meter is a convenient, general purpose instrument d e signed to perform most labora tory conductivity measurements. Applications vary from single determinations using a tempera ture compensated dip-cell, to continuous montoring of liquid chromatography effluents using a micro-volume flow cell. A variety of cells are available to satisfy various application methods. For more information, contact: WESCAN INSTRUMENTS, INC. 3018 Scott Blvd. Santa Clara, CA 95050
WESCAN INSTRUMENTS, INC. See us at the Pittsburgh Conference Booth 6016 CIRCLE 231 ON READER SERVICE CARD
