I have APEC ROES-50 under the sink RO system. I am looking for an aftermarket RO filter.
It looks to me that all RO membranes have a standard size, 11.75 x 1.75". Other than the ANSI, NSF certification, is there anything else one can use to figure out a better quality aftermarket membrane?
OEM membrane doesn't state any certification. So I have nothing to compare with.
It looks to me that all RO membranes have a standard size, 11.75 x 1.75". Other than the ANSI, NSF certification, is there anything else one can use to figure out a better quality aftermarket membrane?
OEM membrane doesn't state any certification. So I have nothing to compare with.
