Proposed revision to NSF/ANSI 55 – Ultraviolet Microbiological Water Treatment Systems. The proposed revision will update the preparation procedures for MS2 and T1 Phage under Normative Annex 1 and the procedures for Q beta under Normative Annex 2.
06818: Approval of 55i53r1 - Micro Preparation Procedures
Document (Archive)
2021-02-19
2020 DWTU JC Meeting Summary Excerpt - DWTU-2020-16.pdf
Document
2021-01-18
DWTU-2020-16_55 v4 Oct. 06_2020 rev a.pdf
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