4 ms·
Granular activated carbon filters that meet NSF P473 test standards will work. http://www.nsf.org/newsroom/frequently-asked-questions-about-nsf-p473-and-perflu
by lvs 8y ago
Granular activated carbon filters that meet NSF P473 test standards will work.
http://www.nsf.org/newsroom/frequently-asked-questions-about-nsf-p473-and-perfluorochemicals http://www.nsf.org/newsroom/frequently-asked-questions-about...