Historical
NSF/ANSI 53-2011a
Drinking water treatment units û Health effects
This revision removed the filter media test from the minimum performance requirements under section 6.
Content Provider
NSF International [nsf]
This revision removed the filter media test from the minimum performance requirements under section 6.
Content Provider
NSF International [nsf]
As the voice of the U.S. standards and conformity assessment system, the American National Standards Institute (ANSI) empowers its members and constituents to strengthen the U.S. marketplace position in the global economy while helping to assure the safety and health of consumers and the protection of the environment.