Hygrometers measure atmospheric water vapor.

Acralyzers monitor and record low atmospheric concentrations of oxidants and oxides of nitrogen.

Beckman Instruments, Inc. became interested in measuring, controlling, and fighting air pollution in the late 1940s and…

Acralyzers like this one monitor and record low atmospheric concentrations of oxidants and oxides of nitrogen.

Beckman Instruments, Inc. became interested in measuring, controlling, and fighting air pollution in the…

This instrument (labeled on the back of the photograph as an acralyzer) was used to monitor and record low atmospheric concentrations of oxides of nitrogen, which lead to air pollution.

Beckman Instruments, Inc. became…

The first Beckman Instruments DU Spectrophotometer was developed in 1940, when the company was still called National Technical Laboratories. Spurred by employee Howard Cary (who had previously been involved in pH meter…

The BUN Analyzer 2, used for blood urea nitrogen, debuted in 1979.

Beckman's first BUN Analyzer (for blood urea nitrogen) was released in 1972.

Beckman's foray into ultraviolet spectroscopy began in 1940, when the company (then called National Technical Laboratories) produced the DU prototype. The double-beam Model 25 was introduced in the early 1970s.

The first Beckman Instruments DU Spectrophotometer was developed in 1940, when the company was still called National Technical Laboratories. Spurred by employee Howard Cary (who had previously been involved in pH meter…

The first Beckman Instruments DU Spectrophotometer was developed in 1940, when the company was still called National Technical Laboratories. Spurred by employee Howard Cary (who had previously been involved in pH meter…

This model of DU Spectrophotometer was first produced in 1980 and used a mirocomputer to control results, could store up to 9 user-generated programs, and could print results.

The first Beckman Instruments DU…

Produced in the 1960s, the DB-G was a single-beam grating (as opposed to a prism) ultraviolet spectrophotometer.

The pictured unit may be a prototype. See inscription for more information.

The Beckman DK Spectrophotometer was an enhancement of the DU, which expanded the instrument’s range of into near-infrared. This was accomplished by chemist Wilbur I. Kaye, who began his work on science behind the DK at…

The ACTA M UV-visible spectrophotometer was first introduced in 1974.

Produced in the 1960s, the DB-G was a single-beam grating (as opposed to a prism) ultraviolet spectrophotometer.

The ACTA II was a UV-visible spectrophotometer.

The ACTA V was a UV-visible spectrophotometer, first released in 1970.

The ACTA III was a UV-visible spectrophotometer.

The Microlab 600 computing infrared spectrophotometer debuted in 1978.

The Beckman Instruments IR spectrophotometers began as a request from the Office of Rubber Reserve to Arnold O. Beckman in 1942, asking for an…

The Beckman Instruments IR spectrophotometers began as a request from the Office of Rubber Reserve to Arnold O. Beckman in 1942, asking for an infrared spectrophotometer that they could use to create rubber. Under this…

The Beckman Instruments IR spectrophotometers began as a request from the Office of Rubber Reserve to Arnold O. Beckman in 1942, asking for an infrared spectrophotometer that they could use to create rubber. Under this…

The Beckman Instruments IR spectrophotometers began as a request from the Office of Rubber Reserve to Arnold O. Beckman in 1942, asking for an infrared spectrophotometer that they could use to create rubber. Under this…