ISOTOPES for Your Development Work
NEW PRODUCTS leveling feet support the cabinet in a fixed location, and two spirit levels are mounted on the cabinet. Four openings in the cover are fitted with neoprene stoppers so that the solvent can be replenished during a run. A drain in the bottom permits flushing. The over-all height of the cabinet is 36 inches when the cabinet is closed. Arthur H. Thomas Co. P-l 7
Laboratory Conductivity Bridges and Ce/is
Oak Ridge National Laboratory offers more than 300 radioactive and stable isotope products.
• DESIGNED FOR INSTRUCTIONAL WORK • TITRATION MEASUREMENTS
RADIOISOTOPES Processed Solutions — 90 processed radioisotopes may be obtained, including many carrier-free and high specific activity products. Now Available — Iridium -192 gamma sources with specific activity up to 100 curies per gram, and cobalt-60 radiography sources 1/8 and 1 /16-inch in diameter with specific activity greater than 100 curies per gram. At a reduced price, carbon-14 barium carbonate is available at $9.50 per millicurie.
STABLE ISOTOPES More than 200 stable isotopes available from 50 elements Chemical processing and target fabrication services also offered. . . . Ultra-high isotopic purity in a number of isotopes. For information or literature, write t o : Isotopes Division, Oak Ridge National Laboratory, P. O. Box X, Oak Ridge. Tennessee.
Industrial Instruments manufactures a versatile line of laboratory conductivity bridges and cells designed specifically for instructional applications in colleges and universities.
Epprecht viscometer has 15 speeds from 5.6 to 3 5 2 r.p.m. for laboratory and in-line process use. It is capable of 15 readings that can be used to produce accurate rheograms and automatically control manufacturing processes. Shear rates are from one to 2 0 0 0 sec. and shearing force varies from two to 2 0 0 , 0 0 0 dynes per sq. cm. Viscosity range is from 0.2 to 10 7 cp. J . W. Fecker. P-18
RC-12B2 Conductivity Bridges are particularly designed for titration measurements and feature high sensitivity for an extremely wide range of measurements. Variable sensitivity control permits easy and rapid balancing. Effective scale length of 84 inches provides fast and easy dial readings. Separate resistance and conductance scales are provided. The RC-16B2 is a true AC bridge with bridge frequencies of 60 or 1000 CPS selected by means of panel mounted switch. Bridge balance indicated by electron-ray eye tube. Bridges are available in battery and line operated models. For complete details on our complete line of laboratory conductivity instruments and cells, fill in your name and address on coupon and mail today.
ISOTOPES
Send detailed literature on Laboratory Bridges & Cells t o . . . Name
OAK RIDGE N A T I O N A L LABORATORY Operated by UNION CARBIDE CORPORATION for the U.S. ATOMIC ENERGY COMMISSION
Circle No. 141 on Readers' Service Card
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Needle hose cock Model BL-4010-1 contains no packing and is capable of taking high pressure, says the company. Floating needle point is of stainless steel, body is chrome plated, and control knob is of fluted bakélite. Said suitable for rare gases as well as other gases and vacuum lines. T & S Brass and Bronze Works. P-19
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Industrial
Instruments
Industrial Instruments
Inc.
89 Commerce Road. Cedar Gro»e. Essex County. N. J. Circle No. 77 on Readers' Service Card VOL. 3 3 , N O . 1 , JANUARY 1 9 6 1
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