Search Results
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Letter from Glenn Joseph to Arnold O. Beckman
- Circa 1933
Glenn Joseph writes to Dr. Beckman about the process of finding the right buffer to use in the new glass electrodes inside the pH meter. The identify of the "Dr. Dupont" referenced in this letter is uncertain.
Arnold…
- Addressee Beckman, Arnold O.
- Author Joseph, Glenn
- Subject Electrodes, Hydrogen-ion concentration--Measurement--Instruments, Sunkist Growers, inc., Scientific apparatus and instruments, Hydrochloric acid, Electrodes, Glass, Scientific apparatus and instruments--Design and construction, California Fruit Growers Exchange, Beckman Instruments, Inc.
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Job schedule for National Technical Laboratories
- 1934-Jan-09
This job schedule is a snapshot of the work being done by NTL in January, 1934. This work included the important pH meter development for the California Fruit Growers Exchange, of course, but also a project for Lee de…
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Letter from Glenn Joseph to Arnold O. Beckman
- 1933
In this letter, Glenn Joseph reports that the vacuum-tube amplifier in the early Beckman pH meter model is (still) not functioning properly. One of the fixes he proposes is replacing the vacuum tubes with a glass…
- Addressee Beckman, Arnold O.
- Author Joseph, Glenn
- Subject Electrodes, Hydrogen-ion concentration--Measurement--Instruments, Sunkist Growers, inc., Scientific apparatus and instruments, Electrodes, Glass, Scientific apparatus and instruments--Design and construction, Amplifiers, Vacuum-tube, California Fruit Growers Exchange, Beckman Instruments, Inc.
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Letter from W. E. Baier to Arnold O. Beckman
- 1934-Jun-22
This letter spells out the instrument maintenance and upgrades that the California Fruit Growers Exchange believe are included with the cost of developing the "glass electrode apparatus" (an early prototype of the…
- Addressee Beckman, Arnold O.
- Author Baier, W. E.
- Subject Hydrogen-ion concentration--Measurement--Instruments, Sunkist Growers, inc., Scientific apparatus and instruments, Electrodes, Glass, Scientific apparatus and instruments--Design and construction, California Fruit Growers Exchange, Beckman Instruments, Inc.
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Financial statement for McLeod Gauge and glass electrode development
- 1934-Apr-10
Invoice from Arnold O. Beckman to W. E. Baier
for developing and calibrating McLeod gauges and glass electrodes -- components involved in the early Beckman pH meter.Arnold Beckman invented his first pH meter in 1934…
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Financial statement for glass electrode
- 1934-Jun-19
A bill sent by Arnold Beckman to W. E. Baier, covering the cost of a "glass-electrode apparatus," which was included in the first Beckman pH meter.
Arnold Beckman invented his first pH meter in 1934 at the request of a…
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Letter from Arnold O. Beckman to Glenn Joseph
- 1934-Apr-09
Directions for calibrating a McLeod gauge for use with the early model of the Beckman pH meter. This letter is likely related to the handwritten McLeod gauge diagrams and calculations also found in this folder. At the…
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Letter from Arnold O. Beckman to L. H. Duschak
- 1935-Apr-30
Response to an earlier letter from Dr. Duschak, asking if Dr. Beckman's new "acidimeter" would be appropriate for determining the pH of vegetable juices. Beckman describes some of the recent changes to the instrument,…
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Letter from L. H. Duschak to Arnold O. Beckman
- 1935-Apr-26
One of the earliest inquiries into using one of Arnold Beckman's newly invented pH meters.
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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Letter from Arnold O. Beckman to Glenn Joseph
- 1934-Jun-25
Letter regarding the possible contents of and functioning of the glass electrode in the first pH meter models.
Arnold Beckman invented his first pH meter in 1934 at the request of Glenn Joseph, a chemist from the…
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Calibration of a McLeod Gauge
- 1930s
The McLeod Gauge measures very low pressures of gasses. Its presence in this collection indicates that it was used during the production of Beckman Instruments' early pH meters. These calibrations may have been written…
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Letter from L. H. Duschak to Arnold O. Beckman
- 1935-May-03
Duschak comments on the price of the pH meter (high, but in line with comparable instruments) and inquires whether or not the "acidimeter" could be sold again after his project is finished.
Arnold Beckman invented his…
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McLeod gauge calibration calculations
- 1934-Mar-22
These calibrations and the diagram were done by W. E. Baier, Research Manager of the California Fruit Growers' Exchange. The McLeod Gauge measures very low pressures of gasses. Its presence in this collection indicates…
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Letter from Arnold O. Beckman to Dr. L. H. Duschak
- 1936-May-13
In this letter, Beckman confirms that Duschak can indeed use one of the new "acidimeters" and return it to National Technical Laboratories afterwards. This letter also reveals that during the initial production of the…
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Wilson College chemistry club
- Circa 1937
Group photograph depicting members of the chemistry club at Wilson College in Chambersburg, Pennsylvania. The group consists of nine women gathered around a table while observing one member pouring an unknown substance…
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Portrait of Benjamin Talbot Brooks (b. 1885)
- Circa 1920
Portrait of Benjamin Talbot Brooks (b. 1885). Brooks was an authority on petroleum and author of several volumes on the subject, including The Chemistry of Petroleum Hydrocarbons (1954-55).
- Photographer Alman & Co.
- Subject Brooks, Benjamin Talbot, 1885-, Chemists, Petroleum, Portraits
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Portrait of John Van Nostrand Dorr (1872-1962)
- 1930s
Portrait of John Van Nostrand Dorr (1872-1962). In partnership with John Lundberg and A.D. Wilson, Van Nostrand Dorr owned the Lundberg, Dorr, & Wilson gold & silver mining operation in Terry, South Dakota. In 1916, he…
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Portrait of Williams Haynes (1886-1960)
- Circa 1930
Portrait of Williams Haynes (1886-1960). Williams Haynes was born on July 29, 1886 in Detroit, Michigan. After graduating from high school, Haynes worked as a reporter for the New York Sun before enrolling at Johns…
- Subject Journalists, Haynes, Williams, 1886-1960, Portraits
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Portrait of Marston Taylor Bogert (1868-1954)
- 1920s
Portrait of Marston Taylor Bogert (1868-1954), American Chemical Society President (1907-1908) known for his work on the synthesis of heterocyclic compounds, dyes, pharmaceuticals, and perfumes.
Marston Taylor Bogert…
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Reservation Card for Reception in Honor of Marie Sklodowska Curie by the New York Academy of Sciences, the Museum of Natural History and the New York Mineralogical Club
- Before 1921-May-17
Invitation to the American mineralogist, George F. Kunz, to attend a meeting and reception in honor of Madame Marie Sklodowska Curie at the American Museum of Natural History on May 17, 1921. Kunz was a speaker at this…
- Addressee Kunz, George Frederick, 1856-1932
- Creator Of Work New York Mineralogical Club, American Museum of Natural History, New York Academy of Sciences
- Subject Curie, Marie, 1867-1934, Kunz, George Frederick, 1856-1932, Pupin, Michael, 1858-1935, Osborn, Henry Fairfield, 1857-1935, Abbe, Robert, 1851-1928
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Letter from Charles F. Chandler to Dr. Van Doren
- 1922-Jun-27
Concerns a patent claim by Mathilda (sic) Groll, for cultivating microorganisms in whey and mixing them with sugar.
- Addressee Van Doren, Carl, 1885-1950
- Author Chandler, Charles Frederick, 1836-1925
- Subject Sugar, Groll, Mathilde, Chandler, Charles Frederick, 1836-1925, Microorganisms, Whey
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Letter from Tadeusz Reichstein to Frank Stodola
- 1938-Mar-25
Concerns Stodola's request for reprints from Reichstein.
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Letter from Robert S. Mulliken to J. Bousquet
- 1938-Dec-06
Concerns modifications to the International Table of Isotopes for 1939.
- Addressee Bousquet, J.
- Author Mulliken, Robert Sanderson
- Contributor International Union of Pure and Applied Chemistry
- Subject Isotopes, Aston, Francis William, 1877-1945, Mulliken, Robert Sanderson, International Union of Pure and Applied Chemistry, Lutetium, Dempster, Arthur Jeffrey, Nobel Prize winners
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