10-Time Magnification 0-10 mm. Pressure
Simplifies Measurements!
CARTESIAN MANOMETER gives absolute
and differential RANGE: GRADUATION: ACCURACY: CONSTRUCTION:
readings 0-10 mm. Hg. 0.1 mm. Hg. 1 % of full scale All glass
For the difficult 0-10 mm. region of absolute pressure measurement, where ordinary manometers are too coarse and McLeod gauges too inconvenient. This simple gauge magnifies the pressure readings by a factor of 10, so that 0 to 10 mm. of Hg. appear on a scale of 100 mm. in length. Adaptable for differential or absolute readings by means of a stopcock; can be read continuously and directly. Exceptionally useful for vacuum distillations, oven drying, accurate differential pressure measurement, flow measure ment, etc. See Your Local Laboratory Supply Dealer
VG 1500. . . Cartesian Manometer complete and ready for use, but without mercury $29.90 ea.
MANOSTAT Corporation Circle No. 6G on Readers' Service Card
NOW! A low-cost G-M counting system every lab can afford w
only %m *
RCL's new low-cost G-M Counting System is ideal for economy-minded highschool, college, and training laboratories where quality is important. Immediate delivery on complete system or indi vidual components. System features: Model 20304—New Low-Cost Scaler with five digit direct glow transfer tube readout and 400-1600 V. high voltage power supply. Regulation: 0.5% for =t 10% line variation at 1,000 volts. Indication on panel mounted meter. Input sensitivity: 60 mv with a rise time of less than 5μ seconds. Factory preset at .25 volts. Resolving time is less than 40μ seconds. Cabinet or rack mounted. Front panel dimensions: 19" wide χ 4%" high. Model 30100—Vertical iron shield with lucite mount for end window detector. Model 10104—Halogen quenched end window detector with lite of 3 χ 10'° counts. Window thickness: less than 1.5 mg/cm 1 . Student proof—cannot be damaged by excess voltage. Model 30905—Precision timer accurate to within 0.1 second. Range: 1 second to 60 minutes with one second steps. Model 31901—4 ft. G-M cable. Model 30500—Uranium glass test sample. *Export model slightly higher. For additional in formation, Write Dept. 240
RADIATION COUNTER LABORATORIES, INC. •
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Circle No. 1S0 on Readers' Service Card 92 A
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ANALYTICAL CHEMISTRY
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