Accuracy is extremely important in testing dyestuffs. Delicate balances are used, it being frequently necessary to weigh as little as 1 milligram of color. The DuPont Technical Laboratory is equipped with sensitive scientific balances, handled by...
The micro balance, shown here in the Chemical Department's Analytical Laboratory at DuPont's Experimental Station is one of the essential tools of modern chemistry, which demands a high degree of measuring accuracy. The human hair eight inches...
Some perfumes are compounded from as many as sixty ingredients. The number of items in a compounding laboratory many reach into thousands. The young woman shown here is not only an expert on which of these items can be used successfully for...
Accuracy in checking the thickness of spinnerets is a standard safeguard to insure the quality and uniformity of viscose process rayon produced in plants o f E.I du Pont Nemours & Company.
Air pilots; Postal service; Transport planes; Air mail service;
Text from back of image: "Contrary to general opinion, coast-to-coast airmail is not a one-plane-all-the-way proposition, but the remarkable speed and success of the plan is due to the use of 14 planes for each trip from New York to San Francisco,...
Air pilots; Postal service; Transport planes; Air mail service;
Text from back of image: "Contrary to general opinion, coast-to-coast airmail is not a one-plane-all-the-way proposition, but the remarkable speed and success of the plan is due to the use of 14 planes for each trip from New York to San Francisco,...
Air pilots; Postal service; Transport planes; Air mail service;
Text from back of image: "Contrary to general opinion, coast-to-coast airmail is not a one-plane-all-the-way proposition, but the remarkable speed and success of the plan is due to the use of 14 planes for each trip from New York to San Francisco,...
note with image: "Three cars undergo the "mechanical roll test" simultaneously at the end of the final assembly line in General Motors' new plant at Fremont, Calif. After each car is positioned on the "rolls" (four large revolving drums recessed...
