28 A
VOLUME
The
19, N O . 6
Klett . . . .
WEATHER-OMETER Photometers
• . # · is used by these companies t o t e s t t h e resistance of t h e i r products to the destructive effect of weathering . . . * * * * * * + * * * * * * * * * * * * *
Β. F. Goodrich Company Prismo Laboratories K. Sonneborn Sons, Inc. United States Rubber Company United States Testing Company Tennessee Eastman Corporation Aridye Corporation American Cyanamid Co. Chance Vought Aircraft Collyer Insulated Wire Co., Inc. Congoleum Nairn, Inc. Phillips-Petroleum Co. Pacific Mills Ν ox Rust Corporation National Bureau of Standards (Chemistry Bldg.) National Bureau of Standards (Textile Bldg.) U. S. Naval Clothing Depot U. S. Navy Yard U. S. Marine Corps U. S. Naval Hospital and hundreds of others
Klett-BunuH&Uo+i Pltotoeleobiic QlcuU Cell GoLvUmetet No. 900-3
1U ZUtt *f-l*to>Umete>i
No. S970
Designed for t h e rapid and accurate d e t e r m i n a t i o n of t h i a m i n , riboflavin, and other substances w h i c h fluoresce i n solution. T h e sensitivity and s t a bility are s u c h t h a t i t h a s been found particu larly useful i n d e t e r m i n i n g very small a m o u n t s of these substances.
KLETT SCIENTIFIC PRODUCTS EUCTBOPHORESIS APPARATUS · BIO-COLOBIMKTIBS GLASS ABSORPTION CELLS · COLORIMETER NBPHELOMETERS · GLASS STANDARDS · KLETT REAGENTS
The Weather-Ometer brings weathering conditions right into your laboratory. A few weeks testing with controlable cycles of light, water spray, and selected temperature and humidity equals years of actual outdoor exposure. The Weather-Ometer is safe to operate automatically 24 hours a day without attention. Used all over the world — Atlas Weather-Ometers, Launder-Ometers, and Fade-Ometers.
ATLAS ELECTRIC DEVICES C O . 361 WEST SUPERIOR STREET. CHICAGO 10. ILLINOIS
Klett
Manufacturing
179 E A S T I 7 T H S T R E E T
NEW YORK,
Co. N.Y.
