Search Results
-
Beckman Research pH meter dial, close up
- 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…
-
Man with Beckman Research pH meter, H2 electrode, and Thermomatic
- 1960s
The edge of the paper used as a photo backdrop can be seen, taped to the bench on which the instruments sit.
Arnold Beckman invented his first pH meter in 1934 at the request of a chemist from the California citrus…
-
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…
-
Beckman Model G pH meter with external electrode assembly
- Undated
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 “acidimeter” with its…
-
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.
-
Beckman Model G pH meter, top shot of panel
- Undated
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 “acidimeter” with its…
-
Beckman Model G pH meter, interior shot from above
- Undated
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 “acidimeter” with its…
-
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…
-
Beckman Type 945 Lead Terminator
- 1968
This instrument was designed to be incorporated into electroencephalograph units and included an impedance meter. An electroencephalogram test detects electrical impulses in the brain via electrodes attached to the…
-
Beckman Gas Chromatograph Model GC-2A
- 1964
Beckman Instruments entered the gas chromatograph business in 1956 with the acquisition of the successful Watts Manufacturing Company. Later that year, Beckman Instruments produced its first gas chromatograph, the GC-1,…
-
Beckman Model BCM-400 Blood Chemistry Monitor
- Circa 1970
The instrument monitors pH, partial pressure of carbon dioxide, partial pressure of oxygen, and temperature. It sits before what appears to be a paper backdrop taped in place.
-
Beckman DSA 560E Discrete Sample Analyzer
- Circa 1968
The DSA-560 Discrete Sample Analyzer, introduced in 1968, was Beckman's first clinical chemistry analyzer. It was capable of processing 100 samples per hour and used in the analysis of blood serum, urine, and drinking…
-
Beckman Model N2 pH meter with solutions
- Undated
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…
-
Beckman Model N pH meter with micro cell assembly
- Undated
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…
-
Beckman Glucose Analyzer and Sample Incubator
- Circa 1969
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…
-
Beckman Flame Photometer Automatic Sample Changer
- 1965-May
Flame photometers determine the presence and concentration of some metal ions in a substance by exposing the substance to a flame and reading any changes in the color of the flame.
- Photographer Armstrong & Hess
- Subject Scientific apparatus and instruments, Flame photometry, Beckman Instruments, Inc.
-
Blood Chemistry Monitor in use
- Circa 1970
The instrument, probably Model BCM-400, is consulted by a man taking notes in the foreground. In the background, three other men perform surgery on an animal.
-
Beckman cardiac monitor in use
- Undated
The instrument includes heart rate and echocardiogram monitoring.
-
-
-
Calomel reference electrode, side fill, #78026V
- 1960s
- Photographer Hesketh, Dean D.
- Subject Electrodes, Beckman Instruments, Inc.
-
Low resistance glass electrode #78074V
- 1960s
- Photographer Hesketh, Dean D.
- Subject Electrodes, Glass, Beckman Instruments, Inc.
-
Long reservoir reference electrode #78090V
- 1950 – 1969
- Photographer Dietrich, T. A.
- Subject Electrodes, Beckman Instruments, Inc.
-
Beckman carbon frit reference electrode #78019V
- 1960s
- Photographer Hesketh, Dean D.
- Subject Electrodes, Carbon, Beckman Instruments, Inc.
-
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…
