New Products
Is The Pressure Getting You Down? Eliminate the Hazard of Inadequate or Fluctuating Water Pressure which can mean the Loss of Valuable Time and Material!
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DUAL ASPIRATOR PUMP For 110-115V 60 cycle only... .$249.00 • Raises and holds pressure at 4 0 psi. · Provides 2 independent and powerful aspirators. · Noiseless operation—continuous duty—minimum maintenance. · Can be installed without plumbing or building alterations. LASORATORY
APPARATUS·PRECISION
INSTRUMENTS
B U C H L E R I N S T R U M E N T S , INC. 13S7
16TH
STREET. F O R T LEE. N E W J E R S E Y Circle No. 114 on Readers' Service Card
Q70S4
TAKE YOUR CHOICE! KEWAUNEE'S GOT THE BIGGEST SELECTION OF THE FINEST FUME HOODS At Kewaunee!... it all depends on what you want! We offer a choice of very, very good Laboratory FUME HOODS . . . each is de signed to best serve your needs and/or "pocketbook" . . . long time savings is often a factor! . . . in any case, you can't beat Kewaunee products . . . send for our com plete new catalog and then take your choice —they're all good.
METAL
KEWAUNEE SCIENTIFIC EQUIPMENT CORP. ADRIAN, MICHIGAN
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5 0 9 0 S. Center St. Circle No. 91 on Readers' Service Card
86 A
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ANALYTICAL CHEMISTRY
An NMR analyzer is available for the determination of moisture or oil in solid samples. The instrument is a low-resolution type tuned only to the proton of hydrogen-containing liquids. Samples require no special preparation. The instrument operates over a wide range of moisture concentration from as little as 0.5% to 1 0 0 % . Re peatability of instrument readout is 0 . 2 % of full scale. Accuracy of ± 0 . 2 % has been achieved with an ex ternal digital voltmeter for readout over a two-minute eleven-second inte gration time. Newport of North America, Inc., 1124 Land Title Bldg., Philadelphia, Pa. 19110 416
Signal Averaging System
The 1070 series is based on a com pletely redesigned digital computer main frame with a wide variety of plug-in modules to adapt the main frame to numerous applications. The system features 20 microsecond/ad dress sweep speeds with 9-bit resolu tion, decimal number CRT display of memory address and data values, ex pandable memory (1024 to 4096 words), and hardwire interface to a general purpose computer. Data modi fication capabilities of the 1070 Series include: additive and subtractive transfer, addition and subtraction con stants, integration and differentiation, normalization and curve smoothing. Fabri-Tek Instruments, Inc., 5225 Verona Rd., Madison, Wis. 53711 417 Glow Discharge Source
Improved analytical accuracy is achieved through the use of Glow Dis charge Sources in emission spectrom etry. Among the features are that the relationship between the emission sig nal and sample concentration is linear, matrix effects are reduced to insignifi cant values, only two reference points are required to analyze samples with vast differences in concentration, line definition is superior, and background is substantially Teduced. The source can be converted to hollow-cathode op eration for trace analysis. Carl Zeiss, Inc., 444 Fifth Ave., New York, Ν. Υ. 10018 418
