DI Resin Question?

[radiata]

Do DI Resins have a short shelf life? I just reloaded two old but still in foil packaged resins, and they don't seem to be as effective as I had hoped.

 

[MnFish1]

Do DI Resins have a short shelf life? I just reloaded two old but still in foil packaged resins, and they don't seem to be as effective as I had hoped.

I guess part of the answer depends on 'how old'. I have used them 3 years + old.

PS - what are you using to determine that they are not as effective as you hoped

 

[Rick's Reviews]

Following

 

[radiata]

My 3 probe TDS meter tells me the TDS is 47 coming out of the RO Membranes and going into the DI. Coming out of the DI it measures 32. I would expect it to be zero coming out.

 

[dschuffert]

I have not experienced any change with sealed bags. I have refilled cartridges with sealed bags that are many years old.

 

[dschuffert]

My 3 probe TDS meter tells me the TDS is 47 coming out of the RO Membranes and going into the DI. Coming out of the DI it measures 32. I would expect it to be zero coming out.

It should be 0 coming out of the DI containers. When the TDS measurement coming out of my DI containers goes above 0, that is when I change it out for new resin.

 

[Jekyl]

My 3 probe TDS meter tells me the TDS is 47 coming out of the RO Membranes and going into the DI. Coming out of the DI it measures 32. I would expect it to be zero coming out.

Is the DI packed tight? This can cause issues.

 

[radiata]

Is the DI packed tight? This can cause issues.

Not as tight as I would like. Maybe I should invest in one of these:
https://printedreef.com/collections/new-arrivals/products/di-resin-packing-set

 

[Jekyl]

Not as tight as I would like. Maybe I should invest in one of these:
https://printedreef.com/collections/new-arrivals/products/di-resin-packing-set

Never had a problem just using my hands.

 

[Jekyl]

Not as tight as I would like. Maybe I should invest in one of these:
https://printedreef.com/collections/new-arrivals/products/di-resin-packing-set

Other issues could be not flushing beforehand and low water pressure.

Before flushing my incoming tds can be in the high 200s, I usually get it down to 12 or so before turning on my DI

 

[BZOFIQ]

Vacuum-sealed, "dark" bags seems to store fine for years without issues.

 

[MnFish1]

Other issues could be not flushing beforehand and low water pressure.

Before flushing my incoming tds can be in the high 200s, I usually get it down to 12 or so before turning on my DI

To me this does not make complete sense - can you explain. Your tap water - (i.e. the incoming TDS should not change over time - I guess it depends on where you're measuring 'incoming"? Additionally, curious - how do you get it down - per your quote

 

[Mr. Roboto]

DI takes what the RO membrane doesnt get, if the DI is going quick, the RO membrane is failing IMO.

 

[EeyoreIsMySpiritAnimal]

DI takes what the RO membrane doesnt get, if the DI is going quick, the RO membrane is failing IMO.

Agreed. Water coming out of the membrane should not be in the 40's!

 

[EeyoreIsMySpiritAnimal]

To me this does not make complete sense - can you explain. Your tap water - (i.e. the incoming TDS should not change over time - I guess it depends on where you're measuring 'incoming"? Additionally, curious - how do you get it down - per your quote

My tap water changes all the time...

 

[Cichlid Dad]

Not as tight as I would like. Maybe I should invest in one of these:
https://printedreef.com/collections/new-arrivals/products/di-resin-packing-set

Was this a large bag for multiple reloads? If so that would be the issues imo. Air exposure will deplete the di resin from what I understand. Could be wrong though.

 

[Jekyl]

To me this does not make complete sense - can you explain. Your tap water - (i.e. the incoming TDS should not change over time - I guess it depends on where you're measuring 'incoming"? Additionally, curious - how do you get it down - per your quote

I think the meter is Pre DI, not incoming. As in the water that passes through my other stages (i.e ficron filter). Those filters get flushed before I flip the switch to start creating the water I end up using. Comes built in to the BRS 5 stage that I use.

 

[MnFish1]

I will agree with multiple posters - you need the reading from the tap - and the reading from the output

 

[MnFish1]

I think the meter is Pre DI, not incoming. As in the water that passes through my other stages (i.e ficron filter). Those filters get flushed before I flip the switch to start creating the water I end up using. Comes built in to the BRS 5 stage that I use.

Mine (from BRS) does not measure there. IMHO - the 0nly important reading is the end water. I assume you think the same

 

[MnFish1]

The only important thing here is what is the water coming out of your system