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easycleaner

  • Posts: 244
Tap tds
« on: July 23, 2008, 02:25:44 pm »
Hi, how low does the tap tds have to be before i can use a di system only, without it costing me a mint?
Mart.
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Pristine Clean

Re: Tap tds
« Reply #1 on: July 23, 2008, 03:43:11 pm »
MMM not sure if people will understand this question.

I take it you are on about the purity of tap water?
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BDCS

  • Posts: 4777
Re: Tap tds
« Reply #2 on: July 23, 2008, 04:04:00 pm »
You need to be in a really soft water area for this - and it depends on how much water you need, in small amounts then maybe but I suspect you need to be on the window side
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mark dew

  • Posts: 2901
Re: Tap tds
« Reply #3 on: July 25, 2008, 12:52:36 am »
The formula came from www.andwat.co.uk/ a while ago. To see how long a 25 litre of resin will last divide 500,000 by your TDS reading, this will then give you the amount of water per 25 litre sack of resin.

Example with a tds of 200:

500000/200=2500 litres per 25 litre bag.
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