Search Results
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Experimental apparatus for production of hydrogen
- 1927-Jul-26
General view of an experimental apparatus to test the production of hydrogen from methane and steam at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C.
The Fixed…
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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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Autoclave and still at Urea Plant
- 1930-Jan-08
General view of an autoclave and still 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 Fixed…
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W.E. Kuentzel removing carbon monoxide from water gas
- 1926-Apr
General view of W.E. Kuentzel demonstrating use of an apparatus for the removal of carbon monoxide from water gas by means of preferential combustion at the U.S. Department of Agriculture's Fixed Nitrogen Research…
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V.L. Gaddy with constant-temperature bath at Fixed Nitrogen Research Laboratory
- Circa 1927
General view of V.L. Gaddy demonstrating an apparatus used to create a constant-temperature bath to determine the equilibrium of Urea, a water-soluble powder form of carbonic acid frequently used as a fertilizer and…
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Carbon dioxide drier, compressor, liquifier, and liquid storage
- 1930-Jan-08
General view of a carbon dioxide drier, compressor, liquifier, and liquid storage used at the Fixed Nitrogen Research Laboratory's Urea Plant. Urea is a water-soluble powder form of carbonic acid frequently used as a…
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Mojonnier Apparatus
- 1922
Moisture and milk testers for determining fat and total solids in milk and dairy products according to the Mojonnier process.
- Creator Of Work Williams, Brown & Earle
- Subject Physical instruments, Milk--Testing, Laboratories--Equipment and supplies, Milkfat--Testing
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Vacuum distillation apparatuses
- 1913
Two vacuum distillation apparatuses with various components, including distillation flasks, thermometers, heating baths, vacuum tubes, as well as stands and clamps.
Vacuum distillation is a method of distilling at…
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Apparatuses for determining osmotic pressure and freezing point depression
- 1913
B 2040. Differential tensimeter.
B 2041. Storage rack with circular section for tensimeter.
B 2052. Stirring device, mechanically operated by clockwork.
B 2057. Reading device for thermometer.
B 2060. Complete apparatus… -
Apparatuses for water collection and extraction
- 1913
B 4919. Water sampling apparatus, with bottles and tube for chemical, gas, and bacteriological analysis.
B 4921. For removing river or seawater.
B 4922. Flow-through water sampler suitable for all depths.
B 4923. Winch… -
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Microtomes
- 1913
Microtomes are used for cutting tissues into extremely thin sections, for preparation of samples in microscopy.
B 5255. Sledge microtome for anatomical and bacteriological work.
B 5261. Microtome with crank for all… -
R. Jung sledge microtomes
- 1913
Microtomes are used for cutting tissues into extremely thin sections, for preparation of samples in microscopy.
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R. Winkel Göttingen microscope
- 1913
Microscope with achromatic objectives and Huygens eyepieces. Assembled with the "No. 2b" stand, for medium microscopes with lighting unit.
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R. Winkel Göttingen microscope
- 1913
Microscope with achromatic objectives. Assembled with the "No. 1" stand, for large microscopes.
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Ernst Leitz Wetzlar microscopes
- 1913
Oil immersion microscopes with various components and of different sizes.
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Carl Zeiss Jena microscopes
- 1913
Two microscopes with choices of various components for complete assembly.
B 5095. Sufficient for most bacteriological, histological, botanical, and zoological investigations.
B 5099. For bacteriological work (equipment…