Search Results
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7 itemsOperation and maintenance of the Beckman model G pH meter
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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…
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2 itemspH
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This mailer, sent to Beckman shareholders, was a reprint from a company publication and explained the significance of the pH meter.
Arnold Beckman invented his first pH meter in 1934 at the request of a chemist from…
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11 itemsInstructions for the Beckman Oxygen Electrode Evaluation Kit, X-300-100 (final)
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This glass electrode was first used in Beckman pH meters and later other instruments.
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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13 itemsA Direct Transmittancy Recording Infrared Spectrophotometer
- Beckman Reprint R-24
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The paper, distributed as a reprint from Beckman Instruments, described the IR-3 spectrophotometer. It was originally presented before the Symposium on Molecular Structure and Spectroscopy, held in Columbus, Ohio at…
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19 itemsInstructions for the Beckman Photoelectric Quartz Spectrophotometer
- Instructions No. 91
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This undated draft is handwritten and hand-drawn on yellow paper.
The first Beckman Instruments DU Spectrophotometer was developed in 1940, when the company was still called National Technical Laboratories. Spurred by…
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34 itemsOperating and Maintenance Instructions Model 166 Oxidant Recorder
- Bulletin 419
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Instruction manual for an instrument designed to record levels of oxidants in the atmosphere. Measuring oxidants is one way to quantify air pollution. Photochemical oxidants are air pollutants which form when air…
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4 itemsTeltru psychrometers
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The second side of the poster has been cropped into three parts for ease of reading. These particular instruments were manufactured by the E. Vernon Hill Company based in Chicago.
Psychrometers, also known as…
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Beckman Modular Cuvette
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A cuvette is a clear container for holding liquid samples, usually for use in a spectrophotometer or other instrument. This one is designed specifically for use in blood gas analysis.
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Wherever there's water, there's pH...
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Advertisement about using various models of Beckman pH meters for monitoring water quality in industrial settings.
Arnold Beckman invented his first pH meter in 1934 at the request of a chemist from the California…
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Hand-drawn diagram for batteries used with a Beckman Model G pH Meter
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Instructions and a visual diagram for hooking up 3 #5540 batteries to power a Beckman Model G pH Meter. These three smaller batteries could replace a single, large 22.5 volt battery. This diagram was written on Bob…