NEW PRODUCTS
WANT ACCURATE BOILER WATER TESTS?
MODEL W BOILER WATER COMPARATOR Abo available: Taylor Combina tion pH and Chlorine Compa rator, Taylor Water Analyzer for testing pH, IS constituents. Guaranteed non-fading color stand ards means you get accurate results every time when testing boiler water for pH or phosphate. Deter minations made quickly, easily, on-the-spot. No fragile, individual glass standards to handle.
Get Taylor Sets or immediate replacement of supplies at your nearest dealer. sm sa 47
FREE HANDBOOK -Discusses the importance of pH control in chemiral, food, pharmaceutical, textile, paper, other industries and processes. Illustrates and describes complete Taylor line.
W.A. TAYLOR
AND CO. 7 3 0 6 YORK RD. · BALTIMORE-4, MD.
Circle No. 2 on Readers' Service Card 1 5 6 A · ANALYTICAL CHEMISTRY
LepeL High
Frequency
INDUCTION HEATING V UNITS
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3 in 1 FIXTURE
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for • FLOATING ZONE REFINING AND CRYSTAL GROWING • HORIZONTAL ZONE REFINING • CRYSTAL PULLING
Microgasometer has a total capacity of 2 0 0 microliters in 0.2-microliter di visions. Unit is basically a compari son manometer of Siamese type for equilibration of pressures combined with a micrometer syringe. As gas is absorbed in the reaction flask, the pressure is reduced. Liquid then rises in the right leg of the compari son manometer and falls in the left leg. The micrometer is rotated to advance the Teflon plunger into the syringe. When the liquid levels in both legs of the manometer are equili brated, the volume reading on the micrometer will be equal to the amount of gas absorbed. The syringe, made of precision bore borosilicate glass tubing and a precision ground Teflon plunger made gas- and vacuum-tight with a Viton " 0 " ring seal, and the micrometer, made from polypropylene and polyethylene, are easily cleaned and assembled. Roger Gilmont Instruments, Inc., 1 Great Neck Rd., Great Neck, Ν. Υ. 426 P h o t o e l e c t r i c Titrator Manual titrations are eliminated with this instrument which has a magnetic stirrer and nine different narrow band color filters. A dial adjusts stirring speed, and a selenium barrier layer cell measures the amount of light passing through the titration beaker. The Gal vanometer scale gives results reproduc ible within ± 1 /2%· Titrator can be adapted for micro work for the titra tion of as little as 2 cc. of sample. Bulletin available. Gelman Instru ment Co., 106 N. Main St., Chelsea, Mich. 427
This Lepel 3 in 1 unit is designed for production work a s well a s for research and development laboratories doing exper imental work on semiconductor materials, thermoelectric materials and ultra pure metals. This combination fixture provides facilities for horizontal zone refining, float ing zone refining and crystal growing. All these facilities may not be required in a single program but the rapid progress in materials science emphasizes the need for just such versatile equipment.
ΪΚ This fixture consists of the three attach ments and the basic unit which contains the traverse and programming mechanism. All three attachments and the generator can be operated from the control panel. The change from floating zone opera tion to horizontal zone refining to crystal pulling require •w less than a half hour. ^sn
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job ,·. ;•· fi.'i a j t a ara recoTmerd.itiers v.'!i h Cjt c::>* or ob;,gation WRITE F O P IfcPEL
LepeL
CATALOG
HIGH FREQUENCY LABORATORIES, INC.
55th ST. t 37th AVE.. W000SIDE 77, Ν Υ CHICAGO OFFICE 6246 WEST NORTH AVE Circle No. 97 ο ι Readers' Service Card
