2016DIN 19645:2016-07 Treatment of spent filter backwash water from systems for treatment of water of swimming-pools and baths / Note: This standard is part of the DVGW body of rules.
2016DIN 19645:2016 Treatment of spent filter backwash water from systems for treatment of water of swimming-pools and baths
2006DIN 19645:2006 Treatment of spent filter backwash water from systems for treatment of water of swimming-pools and baths