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Giles Halvorsen

traitement de l eau piscine - 0 views

Answers in which concentration of hydrogen is higher than what is current in pure drinking water will have pH values below 7 and are regarded as acidic. On the other hand, solutions with elements t...

traitement au chlore brome piscine choc d eau de l

started by Giles Halvorsen on 06 Aug 12 no follow-up yet
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