VOLUME
2 4,
NO.
7,
JULY
*
v
\
"X-ray Diffraction is an indispensable instr ment in any study involving crystal structur _ It is a magnificent industrial tool for deter mining the course of chemical reactions in the manufacture and use of materials. It is a key unit in our search for better methods and im proved products, because it provides basic information on component structure that can be obtained in no other known way.' • Chief of Anal ytkal Research for^JohnsMonville
Serving Science and industry
31 A
1952
THE great Johns-Manville Research ATCenter at Manville, N. J.. NORELCO
X-ray Diffraction equipment shows what happens when building materials are ex posed to heat, cold, wear. It plays a star role in development of newproducts and improvement of the old. It's the "trouble-shooter" for manufacturing and sales departments. It identifies mate rials, reveals flaws, serves as the court of last appeal for Johns-Manville scientists. It helps to maintain the leadership of Johns-Manville in providing new and bet ter building materials for its nation-wide and world-wide market.
Innumerable
Applications
NORELCO X-ray Diffraction e q u i p m e n t shows us the atomic world we live in . . . paves the way to better food, clothing, shel ter, a n d medical care . . . indicates ways to conserve our resources and broaden our sciences. It permits non-destructive analy sis which is impossible for chemistry. T h e North American Philips Company welcomes your questions about possible diffraction uses in your company. Also write for free 60-page catalog. Applications now being accepted for fall term of the Philips Diffraction School (October). En roll now or write for details.
Norelco PRODUCT
OF N O R T H A M E R I C A N
In Canada: Rogers Majestic
FOR ROUTINE HIGH-CE An ultracentrifuge to concentrate, purify, and classify macromolecules and colloidal materials — p r o t e i n s , viruses, enzymes, chemical precipitates, etc. Interchangeable angle-type rotors run in vacuum chamber equipped with refrigera tion for controlled rotor temperatures. Automatic electronic controls govern the entire fast cycle of operation, monitor the self-balancing quiet 40,000-rpm electric drive. Double armor-steel guard and inter locks combine safety with dependability. Sendfor complete information onModel h Preparative Ultracentrifuge
spinco
SPECIALIZED INSTRUMENTS CORPORATION 6 0 7 O'NEILL AVE., BELMONT, CALIF.
PHILIPS
COMPANY, INC.
Dept. IE-7 · 1 0 0 East 4 2 n d St., N e w York 1 7, Ν. Υ. Electronics Ltd., 11-19 BrentcliiTe Road, Li-aside, Toronto IT, Ontario
