NEW PRODUCTS Dry ice is used as cooling medium. The portable cabinet's interior surface and removable rack and shelves are made of stainless steel. P-4 Laboratory Fume Hood Petrolite Corp. announces that Aloe Scientific division of A. S. Aloe Com pany has been granted rights to manu facture and distribute a laboratory fume hood recently developed and patented by Petrolite. The hood, de signed to minimize the load on air conditioning or heating equipment, is isolated completely in its use of fresh and exhaust air from the room in which it stands. P-5 High-Speed Switch General Devices, Inc. announces a motor-driven high-speed multichannel sampling switch. Matched contact plates allow sequential sampling of cor responding circuits simultaneously within close phasing tolerances. All signal and motor connections terminate in barrier type terminal strips. The hysteresis synchronous motor supplied with the switch operates on 115-volt, single-phase, 60-c.p.s. current at 30 r.p.s. Channel sampling rate is 1 r.p.s. Model 103C switch is 13 X
COMPLETE COLOR
Heavy duty bath 22% X 4% inches and has six poles, 30 nonshorting or 60 shorting chan nels per pole. P-6 Heavy Duty Bath A heavy duty bath, announced by Electric Hotpack Co., provides an in creased range of 30° to 125° C. within 0.5° C. A four-position heat switch eliminates any possibility of tempera ture "over-shoot or under-shoot." The units are constructed of 18-8 polished stainless steel and are available in sizes with 2- to 10-gallon capacities.
Units for recessed mounting are offered for areas requiring compact space arrangement. A visa-glass in strument cover protects from spillage and from accidental damage to the con trol dials. P-7 Syringe and Lab Glassware Washer Schuco-James syringe and lab glass ware washer is announced by Schueler & Co. More than two thousand syringes can be washed and rinsed in one hour, the manufacturer claims. The washer, fully automatic, cleans
I N LESS
THAN 3 0 SECONDS
MEASUREMENTS
Model 1230: 5 sources, $150
. . . with the Colormaster Differential Colorimeter
CALIBRATED G A M M A R E F E R E N C E SOURCES
Features: *•' • Measures color transmission and reflectance of almost any substance. • Ideal for use in process control applications of papers, textiles, paints, liquids, pigments, slurries, etc. • Reproduces measurements better than .02% reflect ance units. Write for complete information MANUFACTURERS ENGINEERING & EQUIPMENT CORP. MEECO Instruments 10 Sunset Lane, Hatboro, Pa. Circle No. 64 on Readers' Service Card
104 A
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ANALYTICAL CHEMISTRY
Six reference sources (Cobalt-57, Barium-133, Cesium-137, Manganese-54, Sodium-22, Cobalt-60) providing both known gamma ray energies and intensities . . . ideal for qualitative and quantitative techniques. Useful with all types of gamma sensitive detectors . . . designed particularly for well-type scintillation detectors. Each source with an activity of less than 0.1 μο (no AEC license required), yields about 50,000 to 100,000 CPM above 20 KEV. Isotope perma nently sealed within lucite holder. Technical bulletin with complete decay schemes and specifications available on request. new england nuclsar 575 ALBANY STREET,
cor p. ® BOSTON 18
SALES REPS: Atomic Associates, Inc.. Ν. Υ., Phila.. Boston, Wash., A t l a n t a , Dallas, Pittsburgh, Los Angeles, San Francisco; Packard Inst. Sales Corp., La Grange, III., Radionics, Ltd., Montreol. Circle No. 106 on Readers' Service Card
