Equipment used to produce intermediate for conversion to potassium metaphosphate
- Circa 1934
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Small JPG1200 x 923px — 168 KBLarge JPG2880 x 2215px — 761 KBFull-sized JPG3508 x 2698px — 1.0 MBOriginal fileTIFF — 3508 x 2698px — 27.1 MBTwo views of apparatus and equipment used to produce an intermediate suitable for conversion to potassium metaphosphate at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C.
The Fixed Nitrogen Research Laboratory (F.N.R.L.) was established at American University in 1919 under the directorship of Arthur B. Lamb. Initially part of the War Department, the F.N.R.L. was the successor to several wartime initiatives to develop a secure domestic supply of nitrate compounds necessary for the manufacture of explosives during World War I. With a staff of about 110 individuals, including 35 to 50 chemists, the F.N.R.L. focused on the manufacture, production, and development of products of atmospheric nitrogen, including munitions and fertilizers.
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Cite as
“Equipment Used to Produce Intermediate for Conversion to Potassium Metaphosphate,” circa 1934. Travis P. Hignett Collection of Fixed Nitrogen Research Laboratory Photographs, Box 3. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/zk51vh11q.
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