Post on 14-Jan-2016
Elimination of 2L Minimum Sample
POE systems and components
Peter Greiner, NSF International
DWAJC Meeting - December, 2013
Tab 8: DWA-61-2013-11
2L Sample Mandate for POEs Tab 8: DWA-61-2013-11
• Originated from material safety test in DWTU standards
2L Sample Mandate for POEs Tab 8: DWA-61-2013-11
• Originated from material safety test in DWTU standards
• DWTU standards only use 1 test water chemistry
2L Sample Mandate for POEs Tab 8: DWA-61-2013-11
• Originated from material safety test in DWTU standards
• DWTU standards only use 1 test water chemistry
• POEs now evaluated under NSF/ANSI 61 and are evaluated to three different waters (pH 5, 10, and 8)
2L Sample Mandate for POEs Tab 8: DWA-61-2013-10
• Originated from material safety test in DWTU standards
• DWTU standards only use 1 test water chemistry
• POEs now evaluated under NSF/ANSI 61 and are evaluated to three different waters (pH 5, pH 10, and pH 8)
• Means a mandate of three times as many samples under NSF/ANSI 61 which may not be needed for analytical reasons.
2L Sample Mandate for POEs Tab 8: DWA-61-2013-11
• Originated from material safety test in DWTU standards
• DWTU standards only use 1 test water chemistry
• POEs now evaluated under NSF/ANSI 61 and are evaluated to three different waters (pH 5, pH 10, and pH 8)
• Means a mandate of three times as many samples under NSF/ANSI 61 which may not be needed for analytical reasons.
• Recommend removal of mandated 2L minimum.
2L Sample Mandate for POEs Tab 8: DWA-61-2013-11
Proposed revision:
2L Sample Mandate for POEs Tab 8: DWA-61-2013-11
Proposed revision:
Note: Additional units are to be exposed if additional extraction water is needed to complete analysis…