This NMC
NEW PRODUCTS
The shell of the P-K Type (IV) Lab Blender can be charged from either side by the quick removal of either of two dust- and watertight covers.
Gamma Spectrometer Eliminates "Dark Current" Defect Combines Better Resolution With Greater Precision Over Wider Range Than Any Other System At Any Price
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m
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Actual spectrogram of Cobalt-60 made with a GSS-1. Window No. 3. Time constant: 2 sec.
Direct recording attachment for Model DU spectrophotometer enables print ing of wave length and transmittance data of several samples at one or more wave lengths. Complete spec trum can also be plotted. Easily fitted on spectrophotometer and doesn't in terfere with normal use of the instru ment. Connecticut Instrument Corp. P-5
NIGH
Short-arc mercury lamp operates from 42.5 volts d.c. to produce high intensity point source of light. Brightness is 250 candles per sq. mm. and the light produced is 10,000 lumens. Rating is 250 watts and average life is 250 hours. Company recommends for variety of uses: polarimeters, interferometers, pro jection devices, and others. Westinghouse Electric Corp. P-6
Nuclear Measurements Corp.
Two Dial Balance
2460 N. Arlington Ave. . Phone: Liberty 6-2415 INDIANAPOLIS 18, INDIANA international Office: 13 E. 40th Street, New York 16, Ν. Υ. Circle No. 12 on Readers' Service Card
Oil d a m p e d Model D W L - 5 torsion u n i t h a s 500-gm. capacity, a n d u p to 90 grams of weight loading can be dialed in
114 A
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ANALYTICAL CHEMISTRY
P-K's NEW (LV) LAB BLENDER
INTENSIFIER TYPE - To get intensive mix ing of hard-to-blend dry solids, or to break up agglomerates, use wire cage bar assembly. Average blending time for dry formulations: 3 to 5 minutes. FOR GENTLE PRECISION BLENDING — Simply remove wire cage bar. Unique blend ing action will not cause attrition or break down even the most delicate crystals. Average blending time: 3 to 5 minutes.
RESOLUTION HERE
Actual spectrogram of Radium made with a GSS-1. Four runs over a period of 20 hours with no adjust ment of instrument between runs, demonstrating utmost stability. Range: 30,000 C/M. Time constant: 3 sec.
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LIQUID-SOLIDS TYPE - To disperse and blend, uniformly, liquids of any viscosity with dry solids, just insert the wire cage liquidfeed bar assembly. Handles liquids from mi nute quantities up to 40% of total weight. Liquid is introduced through hollow shaft of bar. Even critical formulations blended in 5 to 10 minutes.
T h i s greatly simplified system features reg ulated high voltage supply as part of the counting ratemeter auto-scan system . . . all-transistorized probe amplifier and spec trometer circuits . . . and solid or well-type crystal. These points and the actual spec trograms shown here tell only part of the story. For full details, write or phone collect.
1000 900
with
YOU GET THESE 3 DIFFERENT MIXING ACTIONS...
A complete gamma spectrometer system NMC model GSS-1 ($4,180 fob, Indianapolis)
"DARK CURRENT DEFECT HERE
r
This new P-K Type ( L V ) L a b Blender owes its versatility to the design of the removable, spring-loaded liquid-feed bar assembly. Liquids and solids are prevented from entering the bearing housings by an exclusive, patented seal. Standard ( L V ) L a b Blenders are available in 8 and 16 quart capacities, in transparent Lucite or stainless steel. Interior of shell and stain less steel bar assembly can b e cleaned, clin ically, in minutes. Operates on 115 ν AC. Units can be shipped from stock. For complete technical information and prices, write to PK's Chemical and Process Equip ment Division) 224 Hanson Street, East Stroudsburg, Pennsylvania. UQ
Patterson-Kelly
All P-K Twin-Shell Blenders are patented and the name registered Circle No. 79 on Readers' Service Card
