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Improved microbial-check-valve resinsImproved microbial-check-valve resins have been tested for their microbicidal effectiveness and long-term stability. Resins give more-stable iodine concentrations than previous preparations and do not impart objectionable odor or taste to treated water. Microbial check valve is small cylindrical device, packed with iodide-saturated resin, that is installed in water line where contamination by micro-organisms is to be prevented. Prototype microbial check valve was tested for stability and performance under harsh environmental conditions. Effectiveness was 100 percent at 35 deg, 70 deg, and 160 deg F (2 deg, 21 deg, and 71 deg C).
Document ID
19790000376
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Colombo, G. V.
(Umpqua Research Co.)
Putnam, D. F.
(Umpqua Research Co.)
Date Acquired
August 10, 2013
Publication Date
April 1, 1980
Publication Information
Publication: NASA Tech Briefs
Volume: 4
ISSN: 0145-319X
Subject Category
Life Sciences
Report/Patent Number
MSC-18377
Accession Number
79B10376
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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