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Title Approval of 53i161r2 - Normative Annexes 1 and 2
Description

Proposed revision to NSF/ANSI 53: Drinking Water Treatment Units — Health Effects (53i161r2)



The purpose of this ballot is to clarify normative annexes 1 and 2 regarding MDL, quality control, equipment requirements, matrix spike recovery and controls limits, negative control definition, microscopy analysis and interpretation, and analyst verification for Cryptosporidium parvum and polystyrene microspheres.
Ballot Options Ballot has closed
[ ] Affirmative
[ ] Negative
[ ] Abstain
Document for Approval 53i161r2 - Normative Annexes 1 2 - JC memo & ballot.pdf (see details in new window)
Opening Date Mon, Jan 27 2025 5:00 pm Eastern Standard Time
Closing Date Mon, Feb 17 2025 11:59 pm Eastern Standard Time
Ballot has closed.

Referenced Items

Name Type Date Actions

09434: Approval of 53i161r2 - Normative Annexes 1 and 2

Document (Archive)

2025-02-18

 No Access

53i161r1 Normative Annex 1 2 - Comments & Responses.pdf

Document

2025-01-27

DWTU-2024-12 - Annex 1 2 (53) REV 10_24.pdf

Document

2025-01-27

Blank Comment - TEMPLATE.docx

Document

2025-01-27