A CRITICAL EVALUATION OF THE NSF STANDARD 61/ SECTION 9 TEST IN RELATION TO LEAD LEACHING

摘要

The ANSI/NSF Standard 61/ Section 9 protocol is critically evaluated from the perspective of the leaching solution chemistry. A detailed examination reveals that the test water is roughly representative of a typical water supply. However, some lower pH and lower alkalinity waters tend to be much more aggressive than the existing section 9 water, which may cause utilities problems with first draw compliance for the lead and copper rule, even for products that are section 9 certified.