COIL E M A N
Metrion pH Meter precision pH at a practical N e w — E x t e n d e d R a n g e , direct-reading duplex scales, graduated at 0.1 pH, covering 0-10.0 and 4.0 to 14.0 pH. New—Unlimited Electrode Selection. Uses the famous Coleman Screw Base Elect r o d e s — or any other p H e l e c t r o d e s of modern design and manufacture. New—-Unique Calibration Control that insures continuous precision at any pH.
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New—Ultra-convenient electrode m o u n t i n g — a d a p t s perfectly to titrations and to wide ranges of sample volumes. New—Clean, compact, modern design that matches its modern performance.
New-Practical Price . . * 1 3 9 0 0 For full details write for Bulletin CB-257
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INSTRUMENTS,
price
INC.,
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MAYWOOD,
4dmc£
ILLINOIS
