Table 30, Buffer tables – Hach-Lange SI792 P, SI792x P, SI792x P-FF, SI792x P-PA User Manual User Manual

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Buffer tables

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Table 30 NIST standard buffers

°C

pH 2

pH 4

pH 7

pH 9

0

1.666

4.010

6.984

9.464

5

1.668

4.004

6.951

9.395

10

1.670

4.000

6.923

9.332

15

1.672

3.999

6.900

9.276

20

1.675

4.001

6.881

9.225

25

1.679

4.006

6.865

9.180

30

1.683

4.012

6.853

9.139

35

1.688

4.021

6.844

9.102

40

1.694

4.031

6.838

9.068

45

1.700

4.043

6.834

9.038

50

1.707

4.057

6.833

9.011

55

1.715

4.071

6.834

8.985

60

1.723

4.087

6.836

8.962

65

1.733

4.109

6.841

8.942

70

1.743

4.126

6.845

8.921

75

1.755

4.145

6.852

8.903

80

1.766

4.164

6.859

8.885

85

1.779

4.185

6.868

8.868

90

1.792

4.205

6.877

8.850

95

1.806

4.227

6.886

8.833