The shell of the P-K Type (LV) Lab Blender can be charged from either side by the quick removal Of either of two dust- and watertight covers.
MANUFACTURERS' LITERATURE Furnace Apparatus. Single sheet de scribes and illustrates the Model 60-SC furnace apparatus for semiconductor preparation and the growing of single crystal materials. Marshall Products Co. (Spec. Sheet 825-A). L-39 Lupin Alkaloids. List includes tabu lated data on molecular formulas, melt ing points, specific rotation, and Rf value; also includes reference list and prices for the company's line. Mann Research Laboratories, Inc. L-40
with
P-K's NEW (LV) LAB , BLENDER. YOU GET THESE 3 DIFFERENT MIXING ACTIONS... 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.
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 S minutes.
This new P-K Type (LV) Lab 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 (LV) Lab 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 be 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. 1008 Hanson Street, East Stroudsburg, Pennsylvania. i6Q
Patterson-Kelley All P-K Twin-Shell Blenders are patented and the name registered
Circle No. 79 on Readers' Service Card
Rare Earth Price List. Price list quotes for small lots on rare earth ox ides, chlorides, nitrates, fluorides, sul fates, and acetates of 99% minimum purity; also quotes the oxides in 99.9% minimum purity grade. Nuclear Corp. of America {Cat. Sheet 1103). L-41 Laboratory Press. Illustrated sheet describes a hand-operated laboratory press for making pellets or tablets from powdered materials. Parr Instrument Co. {Spec. 2811). L-42 Vacuum Pumps. Twelve-page bulle tin gives descriptions, performance curves, specification charts, and applica tion data on the Models 25, 75, and 150 units; includes prices. Precision Scientific Co. (Bull. 610). L-43 Company Periodical. Twelve-page is sue features article on special instru mentation's role in infrared physical measurement ; also has an article on experiences in infrared consulting, some instrumentation news coverage, a page devoted to analytical aids, and other features. Perkin-Elmer Corp. (Instru ment News, Vol. 11, No. 2). L-44 A.C. Potentiometers. Twelve-page brochure describes design features, ap plications, and operation of Vernistat a.c. potentiometers and adjustable func tion generators; photographs and dia grams. Perkin-Elmer Corp. L-45 Periodical Catalog. New issue de scribes vacuum desiccator, pH meters, membrane filters, dust hoods, and other items. Scientific Products (S/P Re view, June I960). L-46 Labeling Tape. Four-page folder de scribes variety of adhesive tapes and labels for high temperature use; line includes imprinted and unimprinted types. Professional Tape Co. L-47 Periodical Pamphlet. Company pub lication has feature article on a com parison of ionization chamber and li quid scintillation methods for measure ment of beta emitters. New England Nuclear Corp. (Atomlight. April 1960). L-48
Need Gas Excitation for freeradical production, photo chemistry or spectroscopy? Excellence
in
RAYTHEO Electronics
Raytheon Company Commercial Apparatus & Systems Div. Department F-8 Waltham 54, Massachusetts Yes, I am interested in Raytheon's completely packaged microwave power generator systems for gas ex citation. Please send the following material: Π Complète specification sheet D Reprints of noteworthy articles D Comprehensive application bibliography
__ Add«ss City Zone
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State
Circle No. S3 on Readers' Service Card VOL. 3 2 , N O . 9 , AUGUST
1960
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121
A
