Product review (1 stars): These are not NSF/ANSI 53 Certified
These are not NSF/ANSI 53 certified as stated in the product details.  People need to educate themselves on the NSF/ANSI certifications, there are major differences between NSF 42 and NSF 53.  A quick google will tell you all you need to know.  Google NSF 42 vs NSF 53 and you will see what I mean.