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8 items
Klett Bio Colorimeter
- 1929
Klett Bio Colorimeter, a device used in colorimetry to measure the absorbance of particular wavelengths of light by a specific solution. Colorimeters are commonly used to determine the concentration of a known solute in…
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Employee using titration apparatus at Dearborn laboratory facility
- 1920s
General view of an unidentified employee at work in the Dearborn Chemical Company's 35th Street Laboratory facility and manufacturing plant. A variety of titration equipment and other scientific apparatus are visible on…
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Employee at work in Dearborn laboratory facility
- 1920s
General view of employee Al Herman analyzing an unidentified substance at the Dearborn Chemical Company's 35th Street laboratory facility and manufacturing plant. Assorted scientific apparatus and laboratory glassware…
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20 items
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2 items
Type C medium-sized research microscope
- 1927 – 1928
This type C medium-sized research microscope was manufactured by Ernst Leitz of Wetzlar, Germany. Featuring a black enamel horseshoe-shaped base and arm, this microscope also includes a reflecting mirror, eye piece,…
- Manufacturer Ernst Leitz (Firm)
- Subject Microscopes, Ernst Leitz (Firm), Scientific apparatus and instruments
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Repair shop at the Fixed Nitrogen Research Laboratory
- Circa 1928
General view of the repair shop at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory showing assorted machinery and apparatus.
The Fixed Nitrogen Research Laboratory (F.N.R.L.) was established at…
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Naval Stores Investigation Laboratory
- 1901 – before 1928
General view of three employees at work in the Bureau of Chemistry's Naval Stores Investigation Laboratory, a division of the Leather and Paper Laboratory. Assorted laboratory glassware and apparatus, as well as notices…
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Machine shop at the Fixed Nitrogen Research Laboratory
- Circa 1928
General view of the machine shop at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory facilities located in Washington, D.C.
The Fixed Nitrogen Research Laboratory (F.N.R.L.) was established at…
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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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High-pressure circulating pump
- Circa 1928
General view of a high-pressure circulating 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…
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General repair shop at the Fixed Nitrogen Research Laboratory
- Circa 1928
General view of the general repair shop at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory facilities located in Washington, D.C.
The Fixed Nitrogen Research Laboratory (F.N.R.L.) was…
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F.F. Robey at work in carpenter shop at Fixed Nitrogen Research Laboratory
- Circa 1928
General view of F.F. Robey at work in the carpenter shop at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory showing assorted machinery and apparatus.
The Fixed Nitrogen Research Laboratory…
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Employees at work in Fixed Nitrogen Research Laboratory electrical shop
- Circa 1928
General view of the electrical shop at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory showing assorted machinery and apparatus. The man visible on the left-hand side of the photograph is…
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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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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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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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Bureau of Chemistry Water and Beverage Laboratory
- After 1901 – 1928
General view of an employee in the Bureau of Chemistry's Water and Beverage Laboratory conducting an analysis on an unidentified substance. Assorted sample jars and scientific apparatus are visible in the photograph.…
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Bureau of Chemistry Protein Investigation Laboratory
- 1913 – before 1928
General view of employees at work in the Bureau of Chemistry's Protein Investigation Laboratory, with view of assorted laboratory glassware and apparatus. Part of the U.S. Department of Agriculture, the Protein…
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Bureau of Chemistry Oil, Fat, and Wax Laboratory
- 1901 – before 1928
General view of two employees working in the Bureau of Chemistry's Oil, Fat, and Wax Laboratory, with view of assorted laboratory glassware and apparatus. Part of the U.S. Department of Agriculture, the Oil, Fat, and…
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Bureau of Chemistry Nitrogen Laboratory
- 1901 – before 1928
General view of the Bureau of Chemistry's Nitrogen Laboratory showing assorted laboratory glassware and apparatus. Part of the U.S. Department of Agriculture, the Nitrogen Laboratory conducted investigations into…
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Bureau of Chemistry Nitrogen Laboratory
- 1901 – before 1928
General view of an employee conducting an analysis of an unidentified substance in the Bureau of Chemistry's Nitrogen Laboratory. Part of the U.S. Department of Agriculture, the Nitrogen Laboratory conducted…
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Bureau of Chemistry Nitrogen Laboratory
- 1901 – before 1928
General view of an employee operating an apparatus used to study ammonia at the Bureau of Chemistry's Nitrogen Laboratory. Part of the U.S. Department of Agriculture, the Nitrogen Laboratory conducted investigations…
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Bureau of Chemistry Drug Laboratory
- 1901 – before 1928
General view of two employees at work in a Bureau of Chemistry 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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Bureau of Chemistry Carbohydrate Laboratory
- 1913 – before 1928
General view of the Bureau of Chemistry's Carbohydrate Laboratory showing assorted laboratory glassware and apparatus. Part of the U.S. Department of Agriculture, the Carbohydrate Laboratory analyzed the physical and…
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Bureau of Chemistry Carbohydrate Laboratory
- 1913 – before 1928
General view of the Bureau of Chemistry's Carbohydrate Laboratory showing assorted laboratory glassware and apparatus. Part of the U.S. Department of Agriculture, the Carbohydrate Laboratory analyzed the physical and…