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August 2005: Volume 47, Number 8

Standards Requirements for POE vs. POU Systems
by Rick Andrew

Whats the difference between a whole-house filter and one that goes on the end of the kitchen faucet? Besides the obvious (that one is filtering all of the water for the entire house and the other filters only water at the kitchen sink) there are big differences in how these two filters are tested under the NSF/ANSI Drinking Water Treatment Units (DWTU) Standards...

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For earlier columns in this category, click on the link below or hit the 'List All' button.
Testing for Chloramine Reduction Requires In-Place Chloramine Formation  July 2005
Certification of Activated Carbon and Products Containing Activated Carbon  June 2005
Ultraviolet Water Disinfection -- It’s All About the Dose  May 2005
Contaminant Reduction Claims on Reverse Osmosis System Post-Filters  April 2005
Efficient Certification with Product Bracketing  March 2005
Conformance to the NSF/ANSI DWTU Standards of Complete Systems Versus Components  February 2005
Cyst Reduction, Turbidity Reduction, Nominal Particulate Reduction, Class I  January 2005
A New Standard for Shower Filters  December 2004
Water Treatment Technologies: A Bottled Water Perspective  November 2004
Minimum Performance Requirements, Minimum Service Flow: Requirements that must not be minimized!  October 2004
Refrigerator Filters—Unique Products, Unique Certification  September 2004
Softener Certification -- Standard 44 Capacity Testing  August 2004