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Notes
conversion of he units of the residual/total water hardness
German degree
English degree
Franch degree
ppm CaCO
(USA)
3
mval/l
earth alkaline metals
mmol/l
earth alkaline metals
In this context the unit 1 ppm is defined as 1 mg/L CaCO
°dH
1 °dH =
1
1 °e =
0,798
1 °fH =
0,56
1 ppm =
0,056
1 mval/l =
2,8
1 mmol/l =
5,6
°e
°fH
ppm
1,253
1,78
17,8
1
1,43
14,3
0,702
1
10
0,07
0,1
1
3,51
5
50
7,02
10
100
.
3
mval/l
mmol/l
0,357
0,1783
0,285
0,142
0,2
0,1
0,02
0,01
1
0,5
2
1
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