ASTM affirms luminescent dissolved oxygen method as standard for water analysis

After thorough evaluation, the ASTM D19 Committee for water has incorporated the results of the Hach LDO USEPA inter-laboratory validation study into "ASTM Standard D888, Standard Test Method for Dissolved Oxygen" in water...

LOVELAND, CO, July 13, 2005 -- Hach Company has learned that the ASTM International standards development organization recently affirmed luminescent dissolved oxygen (LDO) methodology as one of three ASTM standard methods for measuring dissolved oxygen in water.

After thorough evaluation, the ASTM D19 Committee for water has incorporated the results of the Hach LDO® USEPA inter-laboratory validation study into "ASTM Standard D888, Standard Test Method for Dissolved Oxygen" in water. The revised standard -- now listing the LDO method (Method C) along with traditional Winkler titration (Method A) and electrochemical (membrane) method (Method B) -- will be published under Standard D888-05 in the Annual Book of ASTM Standards, Volumes 11.01 and 11.02.

Originally known as the American Society for Testing and Materials (ASTM), ASTM International is trusted by end-users in industry, municipalities, and the USEPA for the development of technical standards and practices for materials, products, systems, and services. The organization's consensus body is representative of manufacturers, users, consumers, government, and academia from more than 100 countries. Incorporation into the ASTM Standard D888 affirms, through technical consensus, the performance of the LDO method for measuring DO concentration in water, Hach stated.

The Hach LDO Probe, proven repeatedly in the field and laboratory for durability, accuracy, precision, and reduced maintenance, is changing the standard for dissolved oxygen measurement.

Based in in Loveland, Colo., the Hach Company (www.hach.com) is a subsidiary of Danaher Corp., a leading manufacturer of process/environmental controls and tools and components. Hach itself is a global leader in the development, manufacture, marketing and support of laboratory, on-line, and on-site water quality analysis solutions.

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For additional information, see: www.astm.org/COMMIT/COMMITTEE/D19.htm.

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