Type of
test water
Hardnessa
Ratio of
Mg:Ca
Concentration of Mg (mg/L)
Concentration of Ca (mg/L)
Control-1
(Mineral water)
30
1:6.4
1.5
9.7
Control-2
(Deep seawater without minerals)
0
-
0
0
100-A
100
1:2
10
20
100-B
1:1
15
15
100-C
3:1
20
7
100-D
Mg alone
24
0
100-E
Ca alone
0
35
250-A
250
1:2
25
50
250-B
1:1
38
38
250-C
3:1
50
18
250-D
Mg alone
60
0
250-E
Ca alone
0
88
500-A
500
1:2
50
100
500-B
1:1
75
75
500-C
3:1
100
35
500-D
Mg alone
120
0
500-E
Ca alone
0
175
1000-A
1000
1:2
100
200
1000-B
1:1
150
150
1000-C
3:1
200
70
1000-D
Mg alone
240
0
1000-E
Ca alone
0
350
aHardness: Ca (mg/L) × 2.5 + Mg (mg/L) × 4.1.
Table 1:
Concentrations of Mg and Ca in test waters (RDSW).
