IONPLUS MB-30 Mixed Bead

[Tom Toro]

I found it on Spectapure's site. This sounds like a wiser choice, you're right.

I'm also using the 75gpd dow membrane. I switched out the 100gpd that came with the unit and it helped a little, but not like your's.

Thanks,
Tom

[AZDesertRat]

The Dow Filmtec 100 GPD is actually a nano filter and not a reverse osmosis membrane so was never intended for drinking water type applications, it does not carry the same NSF certifications as the 75 and below and is only 90% rejection vs 96-98% for the others. It carries a "Pool and Spa Use" designation by the ANSI/NSF.

Make sure you are looking at the sale flyer as all the membranes and resins are on sale at quite a discount. The hand tested and guaranteed membranes are only $40 on sale.

[Tom Toro]

The Dow Filmtec 100 GPD is actually a nano filter and not a reverse osmosis membrane so was never intended for drinking water type applications, it does not carry the same NSF certifications as the 75 and below and is only 90% rejection vs 96-98% for the others. It carries a "Pool and Spa Use" designation by the ANSI/NSF.

Make sure you are looking at the sale flyer as all the membranes and resins are on sale at quite a discount. The hand tested and guaranteed membranes are only $40 on sale.

Last question: will these $40 membranes fit my existing R/O units? Are they standard size?

[AZDesertRat]

Yes, they are the standard Dow TW-1812-75 configuration.

[Tom Toro]

Thanks for all your help. I'm ordering them now.