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Apparatus for making nitric acid from nitrogen dioxide
- Circa 1928
General view of an apparatus used to make nitric acid from nitrogen dioxide at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C.
The Fixed Nitrogen Research Laboratory…
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Apparatus for making urea from ammonium carbamate briquettes
- Circa 1928
General view of an apparatus used to make urea from ammonium carbamate briquettes at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C. Urea is a water-soluble powder…
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Apparatus for studying absorbents for high-pressure ammonia system
- Circa 1928
General view of an apparatus used to study absorbents for a high-pressure ammonia system at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C.
The Fixed Nitrogen…
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Apparatus for testing of catalysts
- Circa 1928
General view of apparatus used at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory to test catalysts at 30 atmospheres of pressure.
The Fixed Nitrogen Research Laboratory (F.N.R.L.) was…
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Apparatus for the study of adsorption of gases on catalysts
- Circa 1928
General view of an apparatus used to study the adsorption of gases on catalysts at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C. Adsorption refers to a surface…
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Apparatus for the study of liquid absorbents for ammonia
- Circa 1928
General view of an apparatus used to study liquid absorbents for ammonia at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C.
The Fixed Nitrogen Research Laboratory…
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Apparatus for water-gas catalysts
- Circa 1928
Apparatus for the production of catalysts used to initiate water-gas shift reactions at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C. The water-gas shift reaction…
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Apparatus to remove carbon dioxide from water gas
- Circa 1928
General view of an apparatus used to remove carbon dioxide from water gas, a mixture of carbon monoxide and hydrogen, at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington,…
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Apparatus to study the compressibility of gases
- Circa 1928
General view of the thermostat and assorted apparatus used to study the compressibility of gases at high pressures at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C. …
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Apparatus used for reaction of active nitrogen
- Circa 1928
General view of apparatus used at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory for the reaction of active nitrogen with carbon monoxide, carbon dioxide, and oxygen and hydrogen gas.
The Fixed…
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Apparatus used to analyze hydrogen
- Circa 1928
General view of an apparatus used to analyze hydrogen at the Fixed Nitrogen Research Laboratory's Synthetic Ammonia Division.
The Fixed Nitrogen Research Laboratory (F.N.R.L.) was established at American University in…
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2 items
Apparatus used to oxidize ammonia
- Circa 1928
Two views of an apparatus used to oxidize ammonia 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…
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Apparatus used to remove ammonia
- Circa 1928
General view of an apparatus used to remove ammonia 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…
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Apparatus used to test catalysts
- Circa 1928
General view of an apparatus used at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory to test catalysts under one atmosphere of pressure.
The Fixed Nitrogen Research Laboratory (F.N.R.L.) was…
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Auxiliary gasoline engine at catalyst testing plant
- Circa 1928
General view of the auxiliary gasoline engine used at the Fixed Nitrogen Research Laboratory's catalyst testing plant. The insignia of the General Motors Company is visible at the base of the engine.
The Fixed Nitrogen…
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Colorimeter for nitrogen dioxide analysis
- Circa 1928
General view of a colorimeter used to analyze nitrogen dioxide at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C. With regards to chemistry, colorimeters are used to…
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Compressors used at catalyst testing plant
- Circa 1928
General view of the compressors used at the Fixed Nitrogen Research Laboratory's catalyst testing plant.
The Fixed Nitrogen Research Laboratory (F.N.R.L.) was established at American University in 1919 under the…
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Conference room at the Fixed Nitrogen Research Laboratory
- Circa 1928
General view of a conference room 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…
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Control board for catalyst testing system
- Circa 1928
General view of the control board for the catalyst testing system 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.)…
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Crackers, deoxidizers, and scrubbers at catalyst testing plant
- Circa 1928
General view of crackers, deoxidizers, and scrubbers at the Fixed Nitrogen Research Laboratory's catalyst testing plant. Numbers are visible on the exterior of the various containers.
The Fixed Nitrogen Research…
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Cyanamide Laboratory
- Circa 1928
General view of the Cyanamide Laboratory at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory facilities located in Washington, D.C. Assorted glassware and laboratory apparatus, including a…
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Diagram of an apparatus used to determine nitrogen in the presence of hydrogen
- Circa 1928
Diagram of an apparatus used to determine nitrogen in the presence of hydrogen. Several component parts of the apparatus are labelled, including a circulating device, combustion tube, and topler pump. The diagram itself…
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Dick Adams using apparatus to determine the hygroscopicity of fertilizer materials
- Circa 1928
General view of Dick Adams using an apparatus to determine the hygroscopicity of fertilizer materials and mixtures at the the Arlington Experimental Farm in Arlington, Virginia. Established by an act of Congress in…
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E.J. Fox and K.S. Love at work in Nitrogen Analytical Laboratory
- 1928 – circa
General view of E.J. Fox and K.S. Love at work in the Nitrogen Analytical Laboratory at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory facilities located in Washington, D.C. Assorted glassware…
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Electrolytic cells for the production of hydrogen
- Circa 1928
General view of electrolytic cells used for the production of hydrogen at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C.
The Fixed Nitrogen Research Laboratory…