ANALYTICAL
40 A
CHEMISTRY
Speedy,
ATLAS FADE-OMETERS AND WEATHER-OMETERS
Ρ Ο S I Τ Ι VΕ Determinations with the
new
rforelco
...playing an important part in improving the quality of PLASTIC PRODUCTS... The destructive effects of sunlight on plastic products such as hardening, loss of flexibility, cracking, change in color, etc., can be determined with speed and accuracy in the Atlas Fade-Ometer. In making tests, samples are rotated in holders around the Atlas Enclosed Violet Arc—the closest approach to natural sunlight—with temperature and humidity regu lated according to requirements of test. Holders are avail able for three sizes of samples, 2V2" χ 4%" capacity 42 samples, 2Vi " x 8 " capacity 21 samples, 614" χ 10" capacity 9 samples. Tests can be duplicated at any time thus pro viding reliable data in product development work. Operation is completely automatic and the FadeOmeter can safely be left running continuously for 24 hours without attention. A few hours or days testing in the Fade-Ometer equals months or years of exposure to actual sunlight. Fade-Ometer tests are fast becoming accepted as a yard^ stick for standardization in the plastic field as they have been in the textile, paint and other industrial fields for over twenty-five years. The Atlas Twin Arc Weather-Ometer is used to duplicate the combined weathering effect of sunlight, rain, heavy dew, and thermal shock for plastic products exposed to outdoor use. Like the Fade-Ometer it is com pletely automatic in all operations. The cycle timer can be set for duplicate tests at any time. Write for further information in relation to your problem for testing plastic materials.
ATLAS ELECTRIC D E V I C E S C O . 361 W . Superior St., Chicago 10, Illinois
• Providing both speed and precision for the analysis of essential materials, the NORELCO X-ray Diffraction Unit permits utilization of the newest research and control techniques — so urgently needed in dealing with today's problems of new chemical development. Quick to recognize a n d adopt improvements in research techniques and production methods, the chemical industry will welcome the New N O R E L C O X - r a y D i f f r a c t i o n U n i t for its efficiency in speeding the analysis and aiding in the synthesis of essential materials—quinine, penicillin, synthetic rubber. I n other phases of chemistry it is useful not only for speedy iden tification, but also for tracing changes in struc ture and for differentiating allotropie forms. * * * • Write for new 24-page illustrated booklet describing Philips Diffraction equipment and related products. Ask for information on the fall and spring sessions of the
PHILIPS DIFFRACTION SCHOOL, held in
New
York City.
N O R T H
A M E R I C A N
P H I L I P S C O M P A N Y ,
I N C .
Research and Control Instruments Division 7 5 0 SOUTH FULTON AVENUE, MT. V E R N O N , Ν . Υ . In Canada: Philips Industries Ltd., 1203 Philips Square* Montreal EjportRepresentative: Philips Export Corp.,750South Fulton Ave., Ml. Vernon, N.Y.
