Search Results
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Compression and high-pressure storage cylinders
- 1928-Aug-21
General view of two compression and high-pressure storage cylinders used at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C. Part of a hand-operated booster connected…
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Heat converter, interchanger, and condenser for water-gas hydrogen production
- 1926-Apr
General view of a heat converter, interchanger, and condenser used for water-gas hydrogen production at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C. The term "water…
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V.L. Gaddy operating compressors at Urea Plant
- 1926-Apr
General view of V.L. Gaddy demonstrating use of compressors at the Fixed Nitrogen Research Laboratory's Urea Plant. In the production of fertilizer, liquid carbon dioxide and liquid ammonia are commonly combined under…
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Study of the thermal dissociation of sodium cyanide
- Circa 1928
General view of an apparatus used to study the thermal dissociation of sodium cyanide at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C. Thermal dissociation is…
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Study of the Bucher Process at the Fixed Nitrogen Research Laboratory
- Circa 1928
General view of an apparatus used to study the Bucher Process for the fixation of nitrogen at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C. Based on research…
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Absorption of nitrogen oxides by silica gel
- Circa 1928
General view of an apparatus used to study the absorption of nitrogen oxides by silica gel at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C.
The Fixed Nitrogen…
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Thermostat for measuring rates of reaction
- Circa 1928
General view of a thermostat apparatus used to measure rates of reaction 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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Metallic contact apparatus
- Circa 1928
General view of a metallic contact apparatus, likely used to measure electrical contact between metallic objects, at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C.
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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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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 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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Silica gel adsorber for nitrogen dioxide
- Circa 1928
General view of an apparatus used to facilitate the adsorption of silica gel and nitrogen oxide at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C. Adsorption refers to…
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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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High-pressure pump
- Circa 1928
General view of a high-pressure pump used 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…
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Electron inertia apparatus
- Circa 1928
General view of the electron inertia apparatus used 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 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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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 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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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…
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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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High-pressure purification apparatus at catalyst testing plant
- Circa 1928
General view of high-pressure purification apparatus 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…
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Combination hot plate and shaker
- 1930-Jan-08
View of a combination hot plate and shaker used to investigate potash at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C. Potash salts are an important component in the…
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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…