6A
ANALYTICAL
CHEMISTRY
aKSfe'-lhelps Godfrey L· Cabot, Inc.
How the RCA m/c
make better carbon black YOU cannot see carbon black particles under an ordinary microscope. But you can see them under an RCA Electron Microscope. Important fact, this, for there's a clear relation be tween particle size and particle properties in the many uses of this material. That's why Cabot—one of the world's largest suppliers of carbon black—uses an RCA Electron Microscope to help predict and control the properties of its products. For instance, Cabot finds two important variables in carbon black production. One is the size of individual particles. The other is the distribution of sizes in a given grade of black. Both must be rigidly controlled. The Electron Microscope is the only direct means of observing these variables. ι The RCA Electron Microscope works for Cabot in many other important applications, too: fundamental research; observation of experimental samples; cus tomer assistance in providing helpful product informa tion on carbon black size, size distribution and structure. With its ability to magnify from 100 to 100,000 diame ters, the RCA Electron Microscope is now working for industry to solve many fundamental problems—in proc ess control, analysis, production, product research. For an analysis on the application of the Electron Microscope to ;yo«r operations, simply write Dept.48-L. Carbon black, as seen with an RCA Electron
Dr. W. R. Smith, Chief Research Chemist, and Miss Mary Martin, Research Chemist, examining samples of Cabot car bon black with the newest of the RCA Electron Microscopes. Radio Corporation of America Scientific Instrument Section Dept. 48-L, Camden, N. J. Please send me complete literature on the RCA Electron Microscope.
SCIENTIFIC
RADIO
Name. Title_ Company.
ENGINEERING
Street City
This is Spheron 6 magnified 52,000 times. Average parti cle size is 0.0285 micron.
Zone_
_State_
Microscope
This is Sterling S magnified 52,000 times. Average par ticle size is 0.06 micron.
INSTRUMENTS
CORPORATION of AMERICA PRODUCTS
DEPARTMENT.
CAMDEN.N.J.
In Canada: R C A VICTOR Company Limited, Montreal
