Table 4 pH and temperature values (continued)
Temperature
°C
°F
25
77
1.679
4.006
6.865
30
86
1.683
4.012
6.853
40
104
1.694
4.031
6.838
50
122
1.707
4.057
6.833
60
140
1.723
4.085
6.836
70
158
1.743
4.126
6.845
80
176
1.766
4.164
6.859
90
194
1.792
4.205
6.877
pH
7.000
9.180
10.012
12.454
6.987
9.139
9.966
12.289
6.970
9.068
9.889
11.984
6.964
9.011
9.828
11.705
6.968
8.962
—
11.449
6.982
8.921
—
—
7.004
8.885
—
—
7.034
8.850
—
—
English 19