INE-
PHSJ-5 pH Meter
16
VI. APPENDIX
List of 10 kinds of pH standard buffer solutions
CLASS 2
th
CLASS 1
th
CLASS 1
th
CLASS 1
th
CLASS 1
th
CLASS
0℃
1.666
3.860
4.003
6.984
5℃
1.668
3.840
3.999
6.951
10℃
1.670
3.820
3.998
6.923
15℃
1.672
3.802
3.999
6.900
20℃
1.675
3.788
4.002
6.881
25℃
1.679
3.557
3.776
4.008
6.865
30℃
1.683
3.552
3.766
4.015
6.853
35℃
1.688
3.549
3.759
4.024
6.844
38℃
1.691
3.548
4.030
6.840
40℃
1.694
3.547
3.753
4.035
6.838
45℃
1.700
3.547
4.047
6.834
50℃
1.707
3.549
3.749
4.060
6.833
55℃
1.715
3.554
4.075
6.834
60℃
1.723
3.560
4.091
6.836
70℃
1.743
3.580
4.126
6.845
80℃
1.766
3.609
4.164
6.859
90℃
1.792
3.650
4.205
6.877
95℃
1.806
3.674
4.227
6.886
CLASS
（
DENANARE
）
1
th
GRADE 1
th
GRADE 1
th
GRADE
2
th
GRADE
0℃
7.12
7.534
9.464
10.317
13.423
5℃
7.500
9.395
10.245
13.207
10℃
7.06
7.472
9.332
10.179
13.003
15℃
7.448
9.276
10.118
12.810
20℃
7.02
7.429
9.225
10.062
12.627
25℃
7.00
7.413
9.180
10.012
12.454
30℃
6.99
7.400
9.139
9.966
12.289
35℃
7.389
9.102
9.925
12.133
38℃
6.97
7.384
9.081
12.043
40℃
6.97
7.380
9.068
8.889
11.984
45℃
7.373
9.038
11.841
50℃
6.97
7.367
9.011
9.828
11.705
55℃
8.985
11.574
60℃
6.97
8.962
11.449
70℃
6.98
8.921
80℃
7.00
8.885
90℃
7.03
8.850
