1955 Advanced Model
MANUFACTURERS' LITERATURE
o.d. X y 8 inch id.; X 1 /i inch i.d.; and 1/2 inch o.d. X inch i.d. 17
Twenty Channel Differential Pulse Height Analyzer (Bell-Kelley Circuits)
MANUFACTURERS' LITERATURE
Electronic Equipment. Catalog of 324 pages lists over 26,000 electronic parts available from Allied Radio Corp. in 1956 (Cat, 150). 18
At last a Twenty Channel Differential Pulse Height Analyzer, incorporating many new f e a tures recently developed, for pulse amplitude distribution studies, divides a spectrum of 60 volts at Pulse Sorter into 1 20 channels, scanning 20 at a time. Test Pulse Generator COMPLETELY electronic. Each channel output is fed to a scale of 16 and register for visual indication. All scalers and registers reset by single push button. Registers have special silencing features.
Dual Titrometer. Four-page bulletin describes dual titrometer, an instrument for performing potentiometric titrations on opaque and highly colored solutions where ordinary color indicator titrations are impractical. Precision 19 Scientific Co. {Bull. 615). Industrial Chemicals. Twenty-four page booklet illustrates company operations and lists industrial chemicals available from The Harshaw Chemical Co. 20 Temperature Bridges. Two-page bulletin describes construction of temperature bridges for temperature and temperature difference measurements of moderate accuracy, diagrams the circuit, and lists specifications and accessory equipment. Leeds & Northrup Ox [Data Sheet E-SS(S)}. 21
6544 North Sheridan Road, Chicago 26, Illinois
detectolab, Write
inc.
us for Complete
specifications.
For further information, circle number 72 A-1 on Readers' Service Card, page 61 A
USB DISÎIUBO WAJtR? Here's good news! distilled water
for storage
at turn of tap
The B a r n s t e a d Ventgard provides complete protection from airborne contamination — bacteria, dust, mist, gases including C0 2 ; particles as small as 0.2 micron. Available for both glass and metal distilled water storage tanks. The Bottle Pump Model with squeeze bulb affords the same protection when drawing distilled water and other liquids from carboys and bottles. Easily affixed to container. 11897T—VENTGARO for Pyrex Tank. Complete with seal and fittings but without filter cartridge. .$18.00 11898T—Same as above but for Metal Tank. $26.00 11888T—VENTGARD Bottle Pump with squeeze bulb but without filter cartridge $13.00 11899T—VENTGARD Filter Cartridge. Average life 1,000 gals, or 60 days $ 5.00 Carton of six $24.00
Will
Hot
New purity safeguard
The Barnstead Heater gives you a constant supply of hot distilled water — a real timesaver in organic e x t r a c t i o n s and s e p a r a t i o n s , qualitative and quantitative analyses, s u l f a t e d e t e r m i n a t i o n s , m a k i n g up concentrated solutions, etc. Copper tank holds 1 Vz gal. 650-watt immersion heaters, thermostatically controlled, provide temperatures from 90 to 212° F. Heater can be connected directly to any gas, steam or electrically operated still. 11889T—DISTILLED WATER HEATER for 115 volts, 60 cycles, AC $88.00 11890T — Same, except for 230 volts, 60 cycles, AC $88.00 ALL 5 WILL warehouses stock the famous Barnstead line complete—Stills [Vi to 500 gal. per hour). Tanks, other accessories, Demineralizers. Write for complete descriptive literature.
CORPORATION
Order from your nearest WILL warehouse, listed below.
and s u b s i d i a r i e s
Specialists
in
Scientific
Supply
ROCHESTER 3, N.Y. · ATLANTA 1, GA. · NEW YORK 12, N.Y. · BALTIMORE 24, AID. · BUFFALO 5, N.Y.
72 A
For further information, circle number 72 A-2 on Readers' Service Card, page 61 A
Laboratory
Standard
Instruments.
Eight-page catalog illustrates and describes standard instruments and standard cells, and includes information on frequency coverage, frequency compensation, and wave form effect. Weston Electrical Instrument Corp. (Catalog A-46-A). 22 Constant Temperature Bath. Twopage bulletin lists uses and specifications of refrigerated adjustable temperature bath, a portable liquid cooler, and two low temperature cabinets. A. Daigger & Co. 23 Laboratory Stirrers. Catalog illustrates and gives specifications for directand gear-driven laboratory stirrers and three stirring paddles. Talboys Instrument Corp. (T-line). 24 Infrared Analysis Service.
Bulletin
describes uses and advantages of infrared and announces new infrared analysis service available from Electrical Testing Laboratories. 25 Drying Ovens. Eight-page catalog lists line of Weber electric drying and vacuum ovens featuring bimetallic thermoregulator and centigrade scale for direct reading. Arthur H. Thomas Co. 26 For further information, see coupon on page 61 A ANALYTICAL
CHEMISTRY
