de ionising filters are they safe?

[aussie brewer]

Hi, I just bought a gt6-22 nuclear grade deionizing filter, does anyone know if they are safe to use? do they leach any toxic substances into the water? i have a ro system which is putting out 14ppm water and thinking of adding this on just for brewing. Cheers

 

[MaxStout]

No idea about your DI filter. Typically, DI filters don't leach anything toxic--they contain a bunch of resin beads.

You're getting 14ppm tds in your existing water--this is quite typical for RO (depends on the feed water, but RO systems are generally capable of removing ~95% of dissolved solids). Not sure why you want to add a DI filter for brewing water. For all intents and purposes, 14ppm is a good start upon which to build your brewing water.

 

[day_trippr]

Those Aussies are a laugh riot!

http://magneticworld.cgwebsolutions...egoryID=173&SubCategoryID=&Page=1&NumItems=10

Anyway...as mentioned, it's a canister of resin beads. Totally harmless, "nuclear grade" or not. And I agree, 14 ppm is so close to zero as to not be worth paying more...

Cheers!

 

[aussie brewer]

Thanks for the advice! I might put the filter on ebay or keep it as a spare for my nuclear reactor

 

[Buckeye_Hydro]

If you want lower TDS from your RO system, that may be possible. What is the tds of your feedwater (tapwater)?

Mixed bed DI resin that is in good shape and is used correctly will produce 0 TDS water for a finite period of time. The resin however is not intended to produce potable water. As mentioned above, use of DI resin is likely overkill for brewing applications.

Russ

 

[aussie brewer]

the feedwater is 95, I just turned the pressure down and I am getting a reading of 11

 

[aussie brewer]

Does that mean its not safe to drink water from a di filter? I read a few posts about potential toxins from the resins leaching into the water

 

[Buckeye_Hydro]

the feedwater is 95, I just turned the pressure down and I am getting a reading of 11

Not really very good. 11/95 = 12% so your rejection rate is only 88%. Rather see it at 98%.

 

[Buckeye_Hydro]

Does that mean its not safe to drink water from a di filter? I read a few posts about potential toxins from the resins leaching into the water

I just means the resins have not been certified by NSF for potable water. Not sure why any one would want to drink DI water. It's expensive to make, and it tastes flat.

Russ