Search Results
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Portable pH meter in use at Althouse Chemical Company plant
- 1946
General view of Martin Eby (left) using a portable pH meter at the Althouse Chemical Company manufacturing plant in Reading, Pennsylvania. The photograph also shows several pieces of equipment used in the manufacture of…
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Addition of chemical intermediate at Althouse Chemical Company plant
- 1946
View of Martin C. Eby, Plant Manager, at the Althouse Chemical Company plant in Reading, Pennsylvania adding a chemical intermediate to a steel autoclave. At right, a barrel of intermediate sits on a portable scale.
…- Contributor Feeman, James
- Subject Dye industry, Employees, Dyes and dyeing, Dyes and dyeing--Equipment and supplies, Althouse Chemical Company
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Production Department at the Althouse Chemical Company plant
- 1946
General view of the Production Department at the Althouse Chemical Company plant in Reading, Pennsylvania showing various equipment used in the production of azo dyes. Assorted equipment and apparatus visible in the…
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Coupling tubs at the Althouse Chemical Company plant
- 1946
General view of the coupling tubs used for the manufacture of azo dyes at the Althouse Chemical Company plant in Reading, Pennsylvania. In a typical manufacturing process for azo dyes, coupling tubs are recessed in the…
- Contributor Feeman, James
- Creator Of Work Tenschert Commercial Photo Studio
- Subject Dye industry, Dyes and dyeing, Dyes and dyeing--Equipment and supplies, Althouse Chemical Company
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Beckman Model R pH meter
- 1942 – 1959
The Model R Industrial pH Meter was first produced in 1942, although this photograph was likely taken much later.
Arnold Beckman invented his first pH meter in 1934 at the request of a chemist from the California…
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Beckman Model H pH meter pictorial wiring diagram
- 1946-Oct-16
Arnold Beckman invented his first pH meter in 1934 at the request of a chemist from the California citrus industry, who needed an accurate way to measure the acidity of his product. The resulting instrument kicked off…
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Beckman Model H pH meter schematic wiring diagram
- 1946-Oct-17
Arnold Beckman invented his first pH meter in 1934 at the request of a chemist from the California citrus industry, who needed an accurate way to measure the acidity of his product. The resulting instrument kicked off…
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Unequalled for Precise Research and Analytical Work
- 1940s
This advertisement for the Model G pH meter highlights the different electrodes that could be used with it. The Model G was Beckman Instruments's first commercial pH meter.
Arnold Beckman invented his first pH meter in…
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2 items
Pauling Oxygen Analyzer
- 1940s
Developed from a Linus Pauling design during WWII, the technology behind Beckman Instruments’ oxygen analyzers ended up doing such diverse jobs as monitoring astronauts’ respiration, maintaining packaged food safety,…
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Interior of Beckman IR-1 Spectrophotometer
- 1940s
The Beckman Instruments IR spectrophotometers began as a request from the Office of Rubber Reserve to Arnold O. Beckman in 1942, asking for an infrared spectrophotometer that they could use to create rubber. Under this…
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Demonstration of a Beckman Model B Spectrophotometer
- 1940s
An unidentified man with a tattoo on his forearm has removed the case of a Model B DU Spectrophotometer in order to demonstrate its functions to three other (also unidentified) men.
The first Beckman Instruments DU…
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Dumbell part of Pauling Oxygen Meter
- 1940s
This glass dumbbell was key to the functioning of the Pauling Oxygen Meter, although production was tricky and originally required a human glass blower to shape the hollow ends of the tiny dumbbell with puffs of breath.…
