In 1968, Beckman's Advanced Technology Operations group introduced the MINOS Dissolved Oxygen Meter (DOM), capable of measuring dissolved oxygen in seawater at depths of 3,000 meters.

The photograph of the instrument…

Technical publication describing the systems of ion exchange deionization for treating boiler condensate, a major source of feedwater contamination. Proves how it is economically desirable to carry out high flow rate…

General view of employees at work in the Analytical Laboratory at the Dearborn Chemical Company's 35th Street laboratory facility located in Chicago, Illinois. The two employees visible in the foreground of the…

Group photograph depicting United States President John F. Kennedy (center) pushing a button to activate the nation's first salt-water conversion plant located at the Dow Chemical Company facility in Freeport, Texas.…

This advertisement highlights uses for Models R, H, and M pH meters in the water and wastewater treatment industry.

Arnold Beckman invented his first pH meter in 1934 at the request of a chemist from the California…

Procedures for a series of tests used in water analysis. The experiments include the determination of various minerals and contaminants present in water samples such as nitrite, sulfates, iron, etc. Each contains a list…

This advertisement describes a use case for Beckman pH meters in which Macon Water Works used the instruments to control the acidity of the water and inhibit corrosion of pipes.

Arnold Beckman invented his first pH…

General view of the sea water intake apparatus at the Dow Chemical Company plant located in Freeport, Texas. Dow commonly processed sea water to obtain magnesium, the world's lightest structural metal.

Cachet and stamp depict Claude-Louis Berthollet. Cachet includes text describing Berthollet's contributions to water purification.

Illustrated agricultural report with the purpose to "explain the nature, behavior, and conservation of water in agriculture." Discusses the strain on water resources, hydro-electric power, navigation, industrial use,…

General view of employees (left to right) Ruth Johnson Dugo, Lillian Kazmierzki, Valentine I. Miciulis, and Serge Levicki at work in the Analytical Laboratory at the Dearborn Chemical Company's 35th Street laboratory…

Black and white print advertisement for Dowex, a high-capacity resin manufactured and sold by the Dow Chemical Company for use in water softeners.

Black and white print advertisement for Dowex, a high-capacity resin manufactured and sold by the Dow Chemical Company for use in water softeners. This advertisement appeared on page 77 of the September 11, 1954 edition…

Black and white print advertisement for Dowex, a high-capacity resin manufactured and sold by the Dow Chemical Company for use in water softeners. This advertisement appeared on page 87 of the May 1, 1954 edition of The…

Black and white print advertisement for Dowex, a high-capacity resin manufactured and sold by the Dow Chemical Company for use in water softeners. This advertisement appeared on page 93 of the May 20, 1954 edition of Th…

Black and white print advertisement for Dowex, a high-capacity resin manufactured and sold by the Dow Chemical Company for use in water softeners. This advertisement appeared on page 75 of the September 12, 1953 edition…

Black and white print advertisement for Dowex, a high-capacity resin manufactured and sold by the Dow Chemical Company for use in water softeners, with information on how to obtain an informational booklet about…

Black and white print advertisement for Dowex, a high-capacity resin manufactured and sold by the Dow Chemical Company for use in water softeners. This advertisement appeared on page 90 of the June 13, 1953 edition of T…

Black and white print advertisement for Dowex, a high-capacity resin manufactured and sold by the Dow Chemical Company for use in water softeners. This advertisement appeared on page 56 of the May 30, 1953 edition of Th…

Color print advertisement for ion exchange resins manufactured and sold by the Dow Chemical Company for water purification and other uses. The advertisement depicts a mother and son peering into a bathtub. The…

Color print advertisement for Dowell Incorporated, a subsidiary of the Dow Chemical Company. The advertisement depicts a young woman examining stalactites and stalagmites in a cave. The accompanying text details the…

Advertisement for "RADA," or rosin-amine-D-acetate, a water soluble chemical manufactured by the Hercules Powder Company for use as a corrosion inhibitor and to control bacteria in water flooding systems, among other…

Color print advertisement for the Dow Chemical Company's Magnesium Division. The advertisement features an illustrated depiction of a hand lifting a winged ingot of Dowmetal magnesium from the sea. The accompanying text…