Method and apparatus for preparing pure water
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United States of America Patent
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Sep 28, 2004
Grant Date -
Jan 30, 2003
app pub date -
Jul 24, 2002
filing date -
Jul 25, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Water treatment systems or assemblies are normally tested after construction, at least for leaks, prior to shipping or storage. Pressure testing with a gas is hazardous, so testing with water is a standard method. After testing, the water is displaced from the system by draining or gas phase flushing. It is nearly impossible to remove all of the water from the system or assembly. This remaining water provides an environment for biological growth which contaminates the system or assembly over time. The purpose of this invention is to eliminate or minimize this biological contamination by adding a biocidal agent to the system or assembly before sealing it for shipment or storage.
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