MANUFACTURERS' LITERATURE
Pyrometers. Catalog gives descrip tions and technical data on optical, micro-optical, radiation, immersion, surface, and indicating pyrometers. Eight pages, illustrated. Pyrometer Instrument Co. (Cat. 175). L-l Lighted Pushbutton Switches. Eightpage data sheet gives information, di mensional drawings, and photos of ap plication for company's line of lighted pushbuttons. Prices included. Micro Switch Division (Data Sheet lJfi). L-2
Photoelectrical Controls. Catalog describes and illustrates photoelectric controls and photoelectric timing con trols. Application diagrams and data are also given. Twenty-four pages. Autotron, Inc. L-3 Control System. Three data sheets discuss the current-adjusting type con trol system for continuously regulating power input to electric furnaces. Spe cifications for individual components are also given. Leeds & Northrup Co. [Data Sheet NDlfi-38 (107); Prel. Data Sheet NU9(8) ; Insert Folder ND4(7A)]. L-4
measure pH with laboratory precision... ANYWHERE!
Laboratory Supplies. Twenty-page catalog describes and illustrates varied equipment : water bath shakers, high vacuum pumps, Teflon ware, flow meters, temperature controllers, frac tion collectors, and other items. Prices included. Scientific Glass Apparatus Co. ("What's New for the Laboratory," No. 31). L-5
COMPAX is no toy. You can't fit it into your pocket. . . but you can take it with you—and you can m e a s u r e t r u e p H q u i c k l y and dependably, anywhere at any time. COMPAX is a complete pH meter of laboratory precision with everything you need in the case—batteries, buffers, electrodes—even beakers. Open the case and it's ready to use... close the cover and it's ready for a rough trip or long storage. COMPAX is convenient too— one control operation and large clear dial for fast, accurate readings. You can test a COMPAX yourself. Write for bulletin and 10 day free trial offer. Coleman COMPAX pH Meter, Model 20, complete with all chemicals, bat teries and ready to use . . . $200.00
Company Periodical. Twenty-eightpage issue contains nine articles dealing with analytical chemistry and some specific procedures. Also, five pages are devoted to lab suggestions. A third feature is the second installment of a review, "The EDTA Titration: Appli cations." J. T. Baker Chemical Co. (Chemist-Analyst, Vol. 47, No. 1) L-6
pH COLEMAN
C O L E M A N COMPAX pH M E T E R COLEMAN
INSTRUMENTS
INC.,
DEPT. A ,
MAYWOOD,
For further information, circle number 82 A on Readers' Service Card, page 85 λ
82 A
· ANALYTICAL CHEMISTRY
ILLINOIS
X-Ray Analysis. Single sheet describes use of x-ray spectrograph by an actual company in determining percentages of elements in alloys. Philips Electronics, Inc. (Speed Alloy Analysis by X-Ray Method). L-7 Pulse Height Analyzer. Bulletin de scribes and gives specifications for the company's Model PA-400 fifty-channel pulse height analyzer. Four pages, il lustrated. Eldorado Electronics (PA400 Tech. Bull). 1-8
