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March 2004: Volume 46, Number 3

The Art and Science of Contaminant Reduction Test Methods
by Rick Andrew

Conceptually, contaminant reduction testing under the NSF/ANSI Drinking Water Treatment Unit (DWTU) standards is simple. Contaminated water is introduced into the DWTU system and the product water is analyzed to establish whether the system is effectively reducing the contaminants for which the test is being done...

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For earlier columns in this category, click on the link below or hit the 'List All' button.
Witness for Certification -- Product Testing Is Controlled, But Not Confined  February 2004
ANSI/NSF Standard 53 Cyst Test Dust Reduction -- The End of an Era  January 2004
Literature Requirements and DWTU Standards  December 2003
An Inside Look at the Certification of Hybrid Systems  November 2003
Arsenic and the ANSI/NSF Drinking Water Treatment Unit Standards  October 2003
Chemical Additives: A Closer Look at Product Testing for Standard 60  September 2003
Water Treatment in Food Service Establishments  August 2003
Perchlorate -- New Contaminant Reduction Claims for DWTU Standards  July 2003
Water Coolers--The Meeting of Many Standards  June 2003
Microbiological Water Purifier Testing--The Quest for Surrogate Organisms  May 2003
A Matter of Public Trust -- A Review of the NSF Conference on POU/POE for SDWA Compliance  April 2003
Material Extraction Testing of Activated Carbon: A Tale of Two Standards  March 2003