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dave allen

  • Posts: 28
TDS meter reading
« on: December 06, 2008, 06:44:36 pm »
Hi,ive a new set up with pure freedom 300GPD system,includes 10"DI vessel, only refilled  water tank approx 10 times prob 2000-3000  litres,TDS meter initally read 000, now reading 004.Is this normal after just a couple of weeks use?what is the max reading i should use the water at?ive been told up to approx 8-10 is this correct. cheers dave ;D
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Chris Galloway

Re: TDS meter reading
« Reply #1 on: December 06, 2008, 06:45:58 pm »
yup that about right. I was told anything below 7 is ok to get spot free results.

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Alex Gardiner

  • Posts: 7740
Re: TDS meter reading
« Reply #2 on: December 06, 2008, 08:23:06 pm »
A 10" DI vessel holds about 700ml of resin. If your RO is sending the water out at about 004-005tds then you should expect to get about 2800 litres from it before the reading rises from 000ppm each time.
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dave allen

  • Posts: 28
Re: TDS meter reading
« Reply #3 on: December 07, 2008, 08:25:03 pm »
that sounds about right then,wonder how long/how much water will be made before the resin will need changing, ill keep checking with TDS meter , thanks for your advise ;)
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