viruses in water – Water Testing Blog & Water Test Kit Store http://watertestingblog.com "It's your water, your health.. and ultimately your LIFE!" Thu, 30 Dec 2021 07:33:30 +0000 en-US hourly 1 https://wordpress.org/?v=4.7.5 NSF/ANSI Standard for Ultraviolet Microbiological Water Treatment Systems http://watertestingblog.com/2008/12/04/nsfansi-standard-for-ultraviolet-microbiological-water-treatment-systems/ http://watertestingblog.com/2008/12/04/nsfansi-standard-for-ultraviolet-microbiological-water-treatment-systems/#respond Thu, 04 Dec 2008 09:51:13 +0000 http://watertestingblog.com/2008/12/04/nsfansi-standard-for-ultraviolet-microbiological-water-treatment-systems/ NSF/ANSI Standard 55:

“Overview: This standard establishes requirements for point-of-use (POU) and point-of-entry (POE) ultraviolet systems and includes two optional classifications. Class A systems (40,000 uwsec/cm2) are designed to disinfect and/or remove microorganisms from contaminated water, including bacteria and viruses, to a safe level. Class B systems (16,000 uw-sec/cm2) are designed for supplemental bactericidal treatment of public drinking water or other drinking water, which has been deemed acceptable by a local health agency.” (source)

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