My DI Resin is spent already?

[jschultzbass]

Just FYI, Dow has newer membrane, the BW60-1812-75 that replaces the TW30 and has a 99% rejection rate.

 

[Buckeye Hydro]

Yep - been out for quite some time. This is what our "standard" 75 gpd membrane is. But as always, you aren't always going to see 99% from it.

Russ