When weighing gold who can afford even a little mistake?
Certainly not the assayer! Using the age old process of "fire assay," the chemist starts with an unknown grade of gold ore and ends up with a very small bead of pure gold — often weighing only a few micrograms. For fast, accurate and reproducible weighings of these beads, assayers for years have used Cahn Microbalances. Series-20 Microbalances weigh these samples automatically with a sensitivity to 0.1 ng. Rugged and portable, they require no special set-up or user training. Users appreciate our "no penalty" pushbutton tare, lighted weighing chamber and wide selection of weighing ranges. Chemicals... sewing needles... dust on filters... meteorite fragments... samples for C H N analysis...or your samples... may be even more precious than gold. And one of our five Microbalances will fit your needs. Cahn Instruments, Inc. 16207 South Carmenita Road Cerritos, CA 90701 Phone (213) 926-3378.
WE HAVE THE SOLUTIONS BEFORE YOU HAVE THE PROBLEMS. Eliminate dead air space and atmospheric contamination 100% from your cylinder gas applications. Especially well suited for working with toxic, corrosive and *«& pollution control calibration gases. Write or call Hank Miller at 575 Mountain Avenue, Murray Hill, New Jersey 07974 AIRCO (201)464-8100. Industrial Gases
CAHN .. Where weighing a little means a lot.
Deep-purge accessory.
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ARRESTED DEVELOPMENT?
WILL YOUR NEW HPLC CONTROLLER GIVE YOU A WEEKEND OFF? Ours will! The SLIC 1400 Interactive Controller offers a unique blend of control, verification, detection and correction of HPLC operations all without an operator.
SYS-TEC INC Sys-Tec, Inc. 877 S.W. Third Street, New Brighton, MN 55112 / (612) 636-6373
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