C & E N PROGRESS REPORT
EQUIPMENT For further information on these products, just check the appropriate key numbers on the coupon on page 62, and C&EN's Readers' Information Service will forward your request to the manufacturer.
INSTRUMENTS AND CONTROLS . . . PRODUCT Bacteria growth monitor
Ε 65
COMPANY American Instrument Co., Inc. Silver Spring, Md.
Helium ionization detector
Ε 66
Beckman Instruments, Inc. Fullerton, Calif.
Air pollution balance
Ε 67
Brinkmann Instruments, Inc. Westbury, N.Y.
Controlling viscometer
Ε 68
Datacon Corp. Huntington, N.Y.
Magnetic flowmeter
Ε 69
Fischer & Porter Co. Warminster, Pa.
Radiographic inspector (AR-2500)
Ε 70
High Voltage Engineering Corp. Burlington, Mass.
Digital control system (Model TF-3)
Ε 71
Theta Instrument Corp. Fairfield, N J .
Temperature controller (NC-1000)
Ε 72
United Electrical Controls Co. Watertown, Mass.
Radiation detector (Model 666)
Ε 73
Victoreen Instrument Division Cleveland, Ohio
58 C&EN NOV. 13, 1967
FEATURES
Instrument is equipped with rotating shutter which permits light from source to enter one aperture for colorimetry, another aperture for nephelometry; thus measurements for transmission and scatter may be made without restandardizing; data re corded automatically Process gas chromatograph device of fers sensitivities of about 1 to 2 p.p.m. of such nonhydrocarbon gases as carbon monoxide, carbon dioxide, oxygen, nitrogen, and hydrogen; op erates on photoionization principle All-digital analytical instrument designed for weighing large filter-paper sheets used in air pollution control; features large weighing chamber, special slanted rack support for filter sheets, and mechanical taring; capacity 100 grams; digital reading to 0.1 mg. Instrument measures viscosity 1800 times per minute; sends pneumatic or electronic signal to any standard in dicating or recording controller; can be used in tank or in-line applications; covers any viscosity range; self-clean ing; explosion-proof Device uses sampling principle to meas ure liquid flows; short length and streamlined shape minimize differ ence of flow velocity through and around meter; encapsulation of field coils allows submerging of meter in liquid; accurate to within 1 % of full scale X-ray machine can be used to inspect very heavy metal sections; 2.5 mil lion volts power delivers up to 200 roentgens per minute at 1 meter from source; makes possible highquality radiographs of sections up to 13 inches thick; flaw sensitivity of 1 % or better; meets requirements of ASM Ε code authorities Instrument employs shaft encoders as motion sensors; produces relay con tact closures as various set-points are reached; no manually adjusted set points; data rate to 50,000 counts per minute Null indicating electronic device is de signed for air, gas, liquid or hotplate control; seven ranges available within - 3 2 0 ° and 600° F.; interchangeable thermistor or wire-wound probes; sur face or flush mounting; °F. or °C. Lightweight, portable, survey meter has uses in monitoring fluoroscopic, den tal, and x-ray facilities; detects both x-ray and gamma radiation; accurate stray radiation measurement
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For plasticizing you need a white oil that w i l l not e n t e r i n t o polymerization reac tion. You use PennDrake Drakeol 9. Jt works.
You're formulating most any kind of product. A white oil or petrolatum is one of its components. (Players flip coins, move one space on heads, 2 spaces on tails)
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Your e m u l s i o n J O t S not m i x w e l l . F'ennD r a k e C h e m g e nuity d e v e l o p s a spc? c i a ! w h i t e oil for y o uι that d o e s the j o b Move
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