Search Results
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Beckman Research pH meter, interior view
- 1960s
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 H2 Electrode Cell Assembly mounted in Thermomatic Constant Temperature Block
- 1960s
The Thermomatic was used in cases where sample temperature was important, such as in the measurement of blood pH.
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Various models of Beckman pH meters
- 1960s
This group photograph appears to include Models G, N, N2, 72, and Pocket pH meters.
Arnold Beckman invented his first pH meter in 1934 at the request of a chemist from the California citrus industry, who needed an…
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Calomel reference electrode, side fill, #78026V
- 1960s
- Photographer Hesketh, Dean D.
- Subject Electrodes, Beckman Instruments, Inc.
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Low resistance glass electrode #78074V
- 1960s
- Photographer Hesketh, Dean D.
- Subject Electrodes, Glass, Beckman Instruments, Inc.
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Long reservoir reference electrode #78090V
- 1950 – 1969
- Photographer Dietrich, T. A.
- Subject Electrodes, Beckman Instruments, Inc.
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Beckman carbon frit reference electrode #78019V
- 1960s
- Photographer Hesketh, Dean D.
- Subject Electrodes, Carbon, Beckman Instruments, Inc.
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Beckman reference electrode #92301
- 1950 – 1969
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 Custom Electrode
- 1960s
This electrode was designed for use with a pH meter.
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…
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Beckman Model R-110 Microzone Densitometer
- 1960s
Beckman introduced the Model R-110 Microzone Densitometer in 1967. Densitometers measure density by scanning electrophoresis media.
- Photographer Armstrong & Hess
- Subject Densitometry, Scientific apparatus and instruments, Beckman Instruments, Inc.
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Helipot Switch
- 1950 – 1969
- Photographer Armstrong & Hess
- Subject Electric switchgear, Beckman Instruments, Inc.
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Helipot Cermet Switch
- 1950 – 1969
- Photographer Armstrong & Hess
- Subject Ceramic metals, Electric switchgear, Beckman Instruments, Inc.
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Helipot Series 1390 Circuit Deck Cermet Switch
- 1950 – 1969
- Photographer Armstrong & Hess
- Subject Ceramic metals, Electric switchgear, Beckman Instruments, Inc.
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Helipot Servo Systems
- 1950 – 1969
- Photographer Armstrong & Hess
- Subject Servomechanisms, Beckman Instruments, Inc.
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Helipot Model 964 Servo Amplifier and Model 982 Power Supply
- 1950 – 1969
- Photographer Armstrong & Hess
- Subject Servomechanisms, Beckman Instruments, Inc.
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Helipot Cermet Switch
- 1950 – 1969
- Photographer Armstrong & Hess
- Subject Ceramic metals, Electric switchgear, Beckman Instruments, Inc.
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Helipot Cermet Switch
- 1950 – 1969
- Photographer Armstrong & Hess
- Subject Ceramic metals, Electric switchgear, Beckman Instruments, Inc.
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Helipot Circuit Deck Switch
- 1950 – 1969
- Manufacturer Armstrong & Hess
- Subject Electric switchgear, Beckman Instruments, Inc.
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Helipot Circuit Deck Switch
- 1950 – 1969
- Photographer Armstrong & Hess
- Subject Electric switchgear, Beckman Instruments, Inc.
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Helipot Cermet Switch
- 1950 – 1969
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Circuit deck of a Beckman cermet switch
- 1950 – 1969
- Photographer Armstrong & Hess
- Subject Ceramic metals, Electric switchgear, Beckman Instruments, Inc.
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Beckman Model 375 Switch
- 1950 – 1969
- Manufacturer Herb Radin and Associates
- Subject Electric switchgear, Beckman Instruments, Inc.
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Beckman Model 376 Switch
- 1950 – 1969
- Photographer Herb Radin and Associates
- Subject Electric switchgear, Beckman Instruments, Inc.
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Dial panel of Beckman Model DPM-100 Liquid Scintillation System
- Circa 1966
The pictured dials are part of a Beckman DPM-100 Liquid Scintillation System. This photograph was incorporated into a composite image featuring a Helipot potentiometer.