Clean It Up
UK General Cleaning Forum => General Cleaning Forum => Topic started by: easycleaner on July 23, 2008, 02:25:44 pm
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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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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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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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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.