In the field,
or in the lab.
Here's the pH meter that travels with you to the job. Indoors, our model PBL plugs into the line; outside, you switch on the batteries (and detach the line cord if it's in the way). With its strong steel case, taut-band meter, and solid state circuitry, the rugged PBL is indifferent to the trials of travel. Put it down flat, stand it on end, or prop it at an angle with the handle. It reads accurately in all these positions. A support rod, which mounts to either side of the case, pivots through 360° to put the electrodes where you want them. Add to all this a full complement of o p e r a t i n g f a c i l i t i e s — pH and MV ranges, two-point calibration, Karl Fischer circuitry, recorder output, provision for automatic temperature control—and you have a lot of pH meter for $215. Write us, or ask your Sargent-Welch representative for full details.
SARGENT-WELCH Scientific instruments, apparatus, chemicals. Sargent-Welch Scientific Company 4647 Foster Ave.; Chicago, III. 60630 Chicago/Anaheim, Cal if./Birmingham Cincinnati/Cleveland/Dal las/Denver Detroit/Springfield, N.J./Toronto, Canada
Circle No. 121 on Readers' Service Card VOL. 4 1 , NO. 1, JANUARY 1969
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