Refrigerator filters certified to reduce Cysts (Cryptosporidium, Giardia)

Cysts are chlorine-resistant parasites. NSF/ANSI 53 cyst reduction certification means the filter is proven to remove them.

NSF/ANSI 53

26 filters certified for cysts

Frequently asked

Which refrigerator filters remove cysts?

26 filters in our data are NSF/ANSI 53 certified to reduce cysts, including the HAF-QIN, MSWF, EDR5RXD1.

What does NSF/ANSI 53 certification mean?

Cysts are chlorine-resistant parasites. NSF/ANSI 53 cyst reduction certification means the filter is proven to remove them.

Does my current filter remove this if it isn't on the list?

Not necessarily. Only a filter that has passed independent NSF/ANSI 53 testing for this specific contaminant is proven to reduce it - a filter simply fitting the same slot doesn't carry the same certification.