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When to change the DI vessel. Ppm ?


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Afternoon everyone. I am wondering what is everyone's take on when to change the DI vessel. 5ppm ? Less / a little more ? So far mine is coming out 4ppm and the glass still looks very clean ? Thanks everyone

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I've always changed when I see the nasty number 1 flashing 

Might start waiting till I hit 005 now as winter is here and resin is like rocking horse poop 

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2 hours ago, Apw1210 said:

I've always changed when I see the nasty number 1 flashing 

Might start waiting till I hit 005 now as winter is here and resin is like rocking horse poop 

The thing is once it hits 1 it doesn't take long to goto 5. As soon as it hits 1 I change it that weekend and sometimes its already at 3. 

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On 02/10/2020 at 18:42, dazmond said:

Just changed mine today...it was reading 005.....a 25kg bag of resin has lasted me a full 5 months(I'm DI only)...

what is your tapwater TDS daz ?

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My resin hits 2 very quick, then hangs at 4ppm for ages, then once it hits 5 it goes 6,7,8 very fast. I also don't fill the vessel to high these days, which makes shaking it a lot easier.

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steve garwood
1 hour ago, mac74 said:

My resin hits 2 very quick, then hangs at 4ppm for ages, then once it hits 5 it goes 6,7,8 very fast. I also don't fill the vessel to high these days, which makes shaking it a lot easier.

Mine went to 1 quickly, however, it’s stayed at 2 for ages after giving it a good shake. I disagree you should change it as soon as it gets to 1. I let mine go to 4 and have been doing this for years without complaints 👍👨‍🦰

  • Agree 2
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