Permissible water quality
Type
pH value
Hardness
Free chlorine
Chloride content
Salt content
Overall dry residue
Temperature
Fresh water
6.8 ... 8.5
DH
8 ... 15
mg/l
<0.3
mg/l
<250
%
<0.4
mg/l
<50
°C
+4 ... +35
Pool water
Salt water
7.2 ... 8.3
7.5 ... 8.5
8 ... 15
20 ... 30
<0.6
<0.3
<250
<22000
<0.4
<4
<50
<50
+4 ... +30
+4 ... +28
EN
47