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CPA — equivalent Hi-Tech RO membrane

Looking for a drop-in alternative to the Hydranautics (Nitto) CPA? BW-28-400 / BW-34-400 is the closest Hi-Tech Membranes equivalent — see how the specs line up below. The same element also replaces matching parts from 8 other manufacturers.

SpecCPABW-28-400 / BW-34-400
Salt rejection
99.5%
99.5%
Permeate flow
9,000 GPD
10,500 GPDMore flow
Test pressure
150 psi
150 psi
Element size
8″ × 40″
8" × 40"

BW-28-400 / BW-34-400 also replaces these equivalents

Cross-referenced against 32 other elements across 9 manufacturers. Every entry links to its own spec comparison.

DuPont (FilmTec)
Toray
Hydranautics (Nitto)same brand
LG Chem (NanoH2O)
Koch (Separation Solutions)
Veolia (formerly SUEZ)
Vontron
CSM (Toray Chemical Korea)
Trisep (Microdyn-Nadir)
View BW-28-365 / BW-34-365 specsView BW-28-400 / BW-34-400 specsAll Hydranautics (Nitto) cross-references

Hydranautics (Nitto), DuPont (FilmTec), Toray, LG Chem (NanoH2O), Koch (Separation Solutions), Veolia (formerly SUEZ), Vontron, CSM (Toray Chemical Korea), Trisep (Microdyn-Nadir) and all model numbers shown are trademarks of their respective owners, used here for compatibility reference only. Hi-Tech Membranes is not affiliated with, endorsed by, or sponsored by any of them.