Product review (3 stars): ANSI NSF Standard Posted not correct,  Basic Chlorine  Filter.
Product on Amazon says it is NSF 42/53 it is in fact on NSF42 for forclorine and NSF 42 for material safety and structural integrity.  It works fine to reduce chlorine smell and taste but not all the other minerals.  Made in China ( PROC}  So at $9.50 each it is cheap and that is why it still gets 3 stars.