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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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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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Agricultural Research Service Drug Laboratory
- 1901 – before 1928
General view of two employees at work in an Agricultural Research Service Drug Laboratory, with view of assorted laboratory glassware and apparatus. Part of the U.S. Department of Agriculture, such laboratories commonly…
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L. Pinck using liquid air condenser for low-temperature distillations
- 1928-Aug-21
General view of Mr. L. Pinck demonstrating use of a liquid air condenser employed for low-temperature distillations at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C.
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Hydraulic pressure pump and other laboratory apparatus
- 1928-Aug-21
General view of assorted apparatus used in the Fixed Nitrogen Research Laboratory's High-Pressure Laboratory, including a hydraulic pressure pump, piston-type gauges, high-pressure booth, and valve manifold. The…
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Compressor used in carbon dioxide refrigeration system
- 1928-Aug-21
General view of compressor used in the carbon dioxide refrigeration system at the Fixed Nitrogen Research Laboratory's High-Pressure Laboratory. The individual present in the photograph is identified as Mr. Tremearne.
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3 items
Carbon monoxide generator and compressor
- 1928-Aug-21
Three views of the carbon monoxide generator and compressor used at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C. The individual visible in the second and third…
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Dr. R.O.E. Davis with apparatus for filling tubes
- 1927-Jul-26
General view of Dr. R.O.E. Davis demonstrating use of an apparatus for filling tubes in order to study ammonia-carbon dioxide-Urea-water systems at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory…
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C.A. Black with apparatus for filling tubes
- 1927-Jul-26
General view of C.A. Black demonstrating use of an apparatus for filling tubes in order to study ammonia-carbon dioxide-Urea-water systems at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory…
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Apparatus used to grow plants at the Fixed Nitrogen Research Laboratory
- Circa 1927-Jul-26
General view of an apparatus used to grow plants under sterile conditions 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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Ammonia-carbon dioxide pump and Urea autoclave
- 1927-Jul-26
General view of the ammonia-carbon dioxide pump and Urea autoclave used 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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Rotary filter for extracting cyanamide from calcium cyanamide
- Circa 1926
Rotary filter used at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory to extract cyanamide from calcium cyanamide.
The Fixed Nitrogen Research Laboratory (F.N.R.L.) was established at American…
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3 items
Bausch & Lomb Abbe Refractometer Serial No. 380
- 1919 – 1926
A: Refractometer
Instrument has round cast iron base; on the base is a rectangular glass mirror mounted to allow rotation; a single black pillar supports the prism alidade, the black cylindrical telescope viewer, and…- Manufacturer Bausch & Lomb Optical Company
- Subject Bausch & Lomb Optical Company, Refractometers, Optics
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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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Removal of carbon dioxide from water gas
- 1926-Apr
M.C. Molstad demonstrating use of an apparatus for the removal of carbon dioxide from water gas by means of scrubbing under pressure at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in…
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Mrs. M.K. Murray using nitrometer at the Fixed Nitrogen Research Laboratory
- 1926-Apr
General view of Mrs. M.K. Murray demonstrating use of a nitrometer, an apparatus used to determine the amount of nitrogen or nitrogen compounds in a substance or mixture, at the U.S. Department of Agriculture's Fixed…
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2 items
J.E. Reuter at work in instrument shop at Fixed Nitrogen Research Laboratory
- 1926-Apr
Two views of J.E. Reuter at work in the instrument shop at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory showing assorted machinery and tools.
The Fixed Nitrogen Research Laboratory…
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2 items
J.E. Reuter at work in instrument shop at Fixed Nitrogen Research Laboratory
- 1926-Apr
Two views of J.E. Reuter at work in the instrument shop at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory showing assorted machinery and tools.
The Fixed Nitrogen Research Laboratory…
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Exterior of Fixed Nitrogen Research Laboratory's Urea Plant
- 1926-Apr
General view of the exterior of the Fixed Nitrogen Research Laboratory's Urea Plant, showing assorted apparatus and equipment used to produce Urea, a water-soluble powder form of carbonic acid frequently used as a…
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Control panel for compressors in Urea Plant
- 1926-Apr
General view of the control panel for 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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Carbon dioxide regenerator in Urea Plant
- 1926-Apr
General view of the carbon dioxide regenerator at the Fixed Nitrogen Research Laboratory's Urea Plant. In the production of fertilizer, liquid carbon dioxide and liquid ammonia are commonly combined under high-pressure…
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2 items
Assorted Urea Plant apparatus
- 1926-Apr
Two views of assorted apparatus at the Fixed Nitrogen Research Laboratory's Urea Plant. Urea is a water-soluble powder form of carbonic acid frequently used as a fertilizer and feed supplement. The individuals present…
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Apparatus for removal of carbon monoxide from water gas
- 1926-Apr
W.E. Kuentzel demonstrating use of an apparatus to remove carbon monoxide from water gas by means of scrubbing with a cuprous (i.e. copper) solution at the U.S. Department of Agriculture's Fixed Nitrogen Research…
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Apparatus for nitration of organic substances
- 1926-Apr
L.A. Pinck demonstrating an apparatus used for the nitration of organic substances at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C.
The Fixed Nitrogen Research…
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3 items
Quartz Spectrograph
- 1900 – 1925
A spectrograph is an instrument used to obtain and record a light spectrum—it splits the light from an object into its component wavelengths so that it can be analysed. The spectral lines of a chemical element is…
- Subject Spectrograph, Optics