The following revisions are being proposed to NSF/ANSI 61, section 7, process media:
1. clarification of 7.3.1 to state that only media requiring conditioning, dosing, use of filtration aids or specific recommended use concentrations, shall be required to contain manufacturer use instructions;
2. clarification that “reagent” water is to be used in 7.5.2; and
3. the inclusion of an additional normalization calculation in section 7.7 for process media with a manufacturer’s recommended use concentration. |
