Search Results
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Helipot Model 5311 single-turn precision potentiometer
- 1965-Jul
Potentiometers regulate the flow of electricity, like the volume dial on a radio. In 1940, Arnold O. Beckman was unsatisfied with dials on the market, so he designed his own helical potentiometers, or helipots, for use…
- Photographer Armstrong & Hess
- Subject Potentiometer, Beckman Instruments, Inc.
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Helipot wirewound potentiometer coil/wiper wear
- 1966-Dec
Potentiometers regulate the flow of electricity, like the volume dial on a radio. In 1940, Arnold O. Beckman was unsatisfied with dials on the market, so he designed his own helical potentiometers, or helipots, for use…
- Photographer Armstrong & Hess
- Subject Mechanical wear, Potentiometer, Beckman Instruments, Inc.
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Helipot Motor Potentiometer Model 939
- 1968
Potentiometers regulate the flow of electricity, like the volume dial on a radio. In 1940, Arnold O. Beckman was unsatisfied with dials on the market, so he designed his own helical potentiometers, or helipots, for use…
- Photographer Beckman Instruments Photographic Services Section
- Subject Potentiometer, Beckman Instruments, Inc.
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Helipot Special Motor-Pots
- 1960s
Potentiometers regulate the flow of electricity, like the volume dial on a radio. In 1940, Arnold O. Beckman was unsatisfied with dials on the market, so he designed his own helical potentiometers, or helipots, for use…
- Photographer Hesketh, Dean D.
- Subject Potentiometer, Beckman Instruments, Inc.
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Woman taking notes at a table where a Beckman glucose analyzer sits
- 1970s
The Glucose Analyzer was developed by James Sternberg in 1969 and was one of several very successful medical testing and analysis instruments that Beckman Instruments produced in the 1970s. Its size, speed, and price…
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Helipot Series 7260 Multi-Turn Wirewound Potentiometers
- 1950 – 1969
Potentiometers regulate the flow of electricity, like the volume dial on a radio. In 1940, Arnold O. Beckman was unsatisfied with dials on the market, so he designed his own helical potentiometers, or helipots, for use…
- Photographer Armstrong & Hess
- Subject Potentiometer, Beckman Instruments, Inc.
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Beckman Fieldlab oxygen analyzer with in situ assembly
- Circa 1975
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,…
- Photographer The Association
- Subject Scientific apparatus and instruments, Oxygen--Measurement, Oxygen--Analysis, Beckman Instruments, Inc.
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Beckman Fieldlab Oxygen Analyzer
- Circa 1975
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,…
- Photographer Armstrong & Hess
- Subject Scientific apparatus and instruments, Oxygen--Measurement, Oxygen--Analysis, Beckman Instruments, Inc.
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Beckman Fieldlab oxygen analyzer with open storage compartment
- Circa 1975
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,…
- Photographer Armstrong & Hess
- Subject Scientific apparatus and instruments, Oxygen--Measurement, Oxygen--Analysis, Beckman Instruments, Inc.
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Beckman Model DB-GT ultraviolet spectrophotometer
- 1960s
Produced in the 1960s, the DB-G was a single-beam grating (as opposed to a prism) ultraviolet spectrophotometer.
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Beckman Radioimmunoassay, Model LS-230 Liquid Scintillation System
- 1970s
Radioimmunoassay is an assay technique used to measure concentrations of antigens by use of antibodies. This test often requires making antigens radioactive and is frequently used to measure hormones in blood.
- Photographer Photomation
- Subject Radioimmunoassay, Beckman Instruments, Inc.
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Beckman Radioimmunoassay, Model LS-230 Liquid Scintillation System
- 1970s
Radioimmunoassay is an assay technique used to measure concentrations of antigens by use of antibodies. This test often requires making antigens radioactive and is frequently used to measure hormones in blood.
- Photographer Photomation
- Subject Radioimmunoassay, Beckman Instruments, Inc.
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Beckman Radioimmunoassay, Model LS-230 Liquid Scintillation System
- 1970s
Radioimmunoassay is an assay technique used to measure concentrations of antigens by use of antibodies. This test often requires making antigens radioactive and is frequently used to measure hormones in blood.
- Photographer Photomation
- Subject Radioimmunoassay, Beckman Instruments, Inc.
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Beckman Model LS-230 Liquid Scintillation Counter and Digitoxin Radioimmunoassay
- 1970s
Liquid scintillation counters measure the radioactivity of a sample by mixing the sample with a solvent containing a scintillator, which will emit photons in the presence of radioactive materials. The counter measures…
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Beckman Radioimmunoassay, Model LS-230 Liquid Scintillation System
- 1970s
Radioimmunoassay is an assay technique used to measure concentrations of antigens by use of antibodies. This test often requires making antigens radioactive and is frequently used to measure hormones in blood.
- Photographer Photomation
- Subject Radioimmunoassay, Beckman Instruments, Inc.
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6 items
Memo from John Leonard to Walter Donner
- Evaluation Study of Twenty-five Zeromatic pH Meters
- 1958-Sep-10
The memo discusses a study of Zeromatic pH meters and includes a handwritten table of data.
Arnold Beckman invented his first pH meter in 1934 at the request of a chemist from the California citrus industry, who needed…
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2 items
Test Specification for Glass Electrodes
- Final draft
- 1955-Feb-25
The foldering of this document suggests it was written by Edwin Arthur. As in a 1957 document, "beauty" was the first criteria to be evaluated.
The glass electrodes were used in Beckman pH meters and various other…
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3 items
pH in Ceramics
- Remarks by Edwin P. Arthur before the Los Angeles Section of the American Ceramic Society March 9, 1955
- 1955-Mar-09
In his address to the American Ceramic Society, Edwin Arthur discussed the importance of pH--and, by extension, the measurement of pH with Beckman instruments--in the work of ceramists.
Arnold Beckman invented his…
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Announcing An Important New Beckman Development
- 1941-Sep-25
This advertisement, reprinted from the American Chemical Society News Edition, may be the earliest advertisement for the DU model. The page is stamped Apr 25 1961 (though the date is crossed out) and the reprint note is…
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Letter from H. M. Steininger to Arnold O. Beckman
- 1948-Oct-07
A chemist with Standard Oil Company's Research Department, Steininger explored the possible creation of an instrument to analyze and record hydrogen sulfide concentrations in oil refineries, a safety measure otherwise…
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8 items
Narrative of glucose analyzer development
- 1967
The handwritten account, possibly written by James C. Sternberg, is missing early pages.
The Glucose Analyzer was developed by James Sternberg in 1969 and was one of several very successful medical testing and analysis…
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39 items
Prototype Continuous Glucose Monitor
- 1968-Jan-18
The document describes the components, operating instructions, troubleshooting, and maintenance of a prototype device. Handwritten notes were added to pages 27 and 31.
The Glucose Analyzer was developed by James…
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2 items
Users of the First Hundred Beckman Quartz Spectrophotometers
- 1977-Aug-19
The photostat document lists the first hundred companies and institutions to use Beckman's quartz spectrophotometers; the original document was undated.
The first Beckman Instruments DU Spectrophotometer was developed…
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2 items
Letter from T. C. Harvie to Pat Connor
- 1951-Apr-01
The letter provides an outsider perspective on Beckman Instruments' competition for the DR spectrophotometer's market.
- Addressee Connor, R. Pat
- Author Harvie, T. C.
- Subject Ultraviolet spectroscopy, Scientific apparatus and instruments, Spectrophotometer, Beckman Instruments, Inc.
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Letter from S. Feier to R. Pat Connor
- 1951-Apr-01
This letter from S. Feier of Buffalo Apparatus Corporation provides an outsider perspective on competition for Beckman Instruments' DR Spectrophotometer market, with specific mention of the Fisher Spectrocord.
- Addressee Connor, R. Pat
- Author Feier, S.
- Subject Ultraviolet spectroscopy, Scientific apparatus and instruments, Spectrophotometer, Beckman Instruments, Inc.
