32 A
ANALYTICAL
CHEMISTRY
The
WEATHER-OMETER • · · · is used by these companies t o t e s t t h e r e s i s t a n c e of t h e i r products to the destructive effect of weathering . . . •k * * * * + * * * * * * * * * * * * * *
B. F. Goodrich Company Prismo Laboratories K. Sonneborn Sons, Inc. United States Rubber Company United States Testing Company Tennessee Eastman Corporation Aridye Corporation American Cyanamid C o . Chance Vought A i r c r a f t Collyer Insulated W i r e Co., Inc. Congoleum N a i r n , Inc. Phillips-Petroleum C o . Pacific Mills Nox Rust Corporation National Bureau of Standards (Chemistry Bldg.) National Bureau of Standards (Textile Bldg.) U. S. N a v a l Clothing Depot U. S. Navy Y a r d U. S. Marine Corps U. S. N a v a l Hospital
and hundreds of others
• The New Coleman JUNIOR Spectrophotometer insures vital research accuracy and rugged convenience for the busy analytical laboratory. Speed and finger-tip control specifically adapt it to routine clinical and industrial analysis. Simple . . . rapid . . . precise . . . this true spectrophotometer requires no filters — produces any color instantly at the turn of one knob. The Model 6A JUNIOR is available NOW at all authorized Coleman Dealers. Price (less power supply) $310.00 Write for New 8-page Bulletin describing the JUNIOR. Ask for B-211
COLEMAN INSTRUMENT, INC. 318 MADISON STREET, MAYWOOD, ILL
T h e 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. T h e Weather-Ometer is safe to operate automatically 24 hours a day without attention. Used all over t h e world — Atlas Weather-Ometers, Launder-Ometers, and Fade-Ometers.
ATLAS ELECTRIC DEVICES
CO.
361 WEST SUPERIOR STREET, C H I C A G O 10, ILLINOIS
