138
Buffer Tables
-05-
NIST Standard (DIN 19266 : 2015-05)
Nominal values in bold.
°C
pH
0
1.666
4.000
6.984
9.464
5
1.668
3.998
6.951
9.395
13.207
10
1.670
3.997
6.923
9.332
13.003
15
1.672
3.998
6.900
9.276
12.810
20
1.675
4.000
6.881
9.225
12.627
25
1.679
4.005
6.865
9.180
12.454
30
1.683
4.011
6.853
9.139
12.289
35
1.688
4.018
6.844
9.102
12.133
37
4.022
6.841
9.088
38
1.691
12.043
40
1.694
4.027
6.838
9.068
11.984
45
11.841
50
1.707
4.050
6.833
9.011
11.705
55
1.715
4.075
6.834
8.985
11.574
60
1.723
4.091
6.836
8.962
11.449
70
1.743
4.126
6.845
8.921
80
1.766
4.164
6.859
8.885
90
1.792
4.205
6.877
8.850
95
1.806
4.227
6.886
8.833
Note:
The actual pH values of the individual batches of the reference
materials are documented in a certificate of an accredited laboratory.
This certificate is supplied with the respective buffers. Only these
pH(S) values shall be used as standard values for the secondary refer-
ence buffer materials. Correspondingly, this standard does not include
a table with standard pH values for practical use. The table above only
provides examples of pH(PS) values for orientation.
Summary of Contents for Stratos Pro A201 PH
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