NEW PRODUCTS
pH unit, readable and reproducible to 0.1 pH unit. Several accessories are available, including adapters for use of the meter with different electrodes and a leatherette carrying case. 10 N e w Electronic Resistance Thermometer Features High Accuracy
A new direct temperature reading instrument, which is said to be the first thermometer capable of covering the range from - 1 0 0 ° C. to 900° C , has been introduced by the Manostat Corp. A special circuit in the Wheatstone
bridge is responsible for the direct reading feature, eliminating time consuming calculations normally required with high precision resistance thermometry. The high accuracy of this instrument, with .1° C. up to 400° C , and .2° C. up to 900° C , is maintained by individual calibration of each resistance bulb and bridge, the manufacturer says. Hermetically sealed heads cover the vacuum scaled platinum elements and leads in the resistance bulb. A plug-in controller accessory with .05° C. reproducibility is also available. 11 Process Radiation Service
Expanding further into the rapidly growing field of nuclear radiation, Isotope Products announces a new Process Radiation Service. The three phases of the service are: the availability of professional consultation service and technical assistance on radiation applications ; the construction of a pilot plant with a powerful gamma source which will be utilized for irradiation of a wide range of products; and the design and construction of individual commercial units for production line irradiation techniques. 12
Air Driven Magnetic Stirrer
Developed to stir open or closed vessels in the presence of explosive vapors or liquids, the new Labline magnetic stirrer is said to eliminate the hazard of the usual electric motor and rheostat. The air motor is fully enclosed with a built-in muffler, and will operate on air pressures as low as 3 lbs. Variable speed is obtained by varying the air supply to the air motor with a built-in needle valve. The sturdy cast aluminum housing has a removable aluminum top which can be replaced by a heater top if desired. Three sizes of Teflon-covered stirring bars, in both cylindrical and Egg Bar shapes, are available for use with the stirrer. 13 Electronic Filter Eliminates Interference
The availability of the Reverter, a pulse-height analyzing device, is announced by the; X-Ray Dept. of General Electric. When used wdth the disFor further information, see coupon on page 79 A
COORS U.S.A. Porous Bottom
CRUCIBLES Coors Porous Bottom Crucibles produced in chemical porcelain by an exclusive process—are exceptionally sturdy, dependable filtering crucibles that give unlimited service under the most exacting conditions. World-wide acceptance by discrimii ing chemists attests to their perfection
ACID WASHED to remove all impurities INDIVIDUALLY TESTED for flow rate and pore diameter "Piied-ui DISC WILL NOT CRACK O N IGNITION PRECISION CONTROLLED POROSITY
COORS PORCELAIN COMPANY G O I D E N COLOffAUU
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