NASA NTRS · 19790000376
Improved microbial-check-valve resins
Abstract
Improved 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).
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Colombo, G. V., Putnam, D. F.. 1980-04-01. Improved microbial-check-valve resins. https://ntrs.nasa.gov/citations/19790000376
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