Honeywell APT4000PH User Manual page 53

Buffer tables
-04- Technical buffers to NIST
°C pH
0 1.67 4.00
5 1.67 4.00
10 1.67 4.00
15 1.67 4.00
20 1.67 4.00
5
25 1.68 4.00
5
30 1.68 4.01
5
35 1.69 4.02
5
40
1.69 4.03
45
1.70 4.04
5
50
1.70 4.06
5
55
1.71 4.07
5 5
60
1.72 4.08
5
65
1.73 4.10
70 1.74 4.13
75 1.75 4.14
80 1.76 4.16
5
85 1.78 4.18
90 1.79 4.21
95 1.80 4.23
5
* Extrapolated
104
7.11
10.32 13.42
5
7.08
10.25 13.21
5
7.06
10.18 13.01
7.04
10.12 12.80
7.01
10.06 12.64
5
7.00
10.01 12.46
6.98
9.97 12.30
5
6.98
9.93 12.13
6.97
11.99
9.89
5
6.97 11.84
9.86
5
6.97 11.71
9.83
*
6.97
9.83 11.57
*
6.97
9.83 11.45
*
6.98
9.83 11.45
*
6.99
9.83 11.45
*
7.01
9.83 11.45
*
7.03
9.83 11.45
*
7.05
9.83 11.45
*
7.08
9.83 11.45
7.11 *
9.83 11.45
APT4000PH
-05- NIST standard buffers
°C pH
0
1.666
5
1.668
10
1.670
15
1.672
20
1.675
25
1.679
30
1.683
35
1.688
40
1.694
45
1.700
50
1.707
55
1.715
60
1.723
65
1.733
*
70
1.743
*
75
1.755
*
80
1.766
*
85
1.779
*
90
* 1.792
95
* 1.806
4.010 6.984
4.004 6.951
4.000 6.923
3.999 6.900
4.001 6.881
4.006 6.865
4.012 6.853
4.021 6.844
4.031 6.838
4.043 6.834
4.057 6.833
4.071 6.834
4.087 6.836
4.109 6.841
4.126 6.845
4.145 6.852
4.164 6.859
4.185 6.868
4.205 6.877
4.227 6.886
9.464
9.395
9.332
9.276
9.225
9.180
9.139
9.102
9.068
9.038
9.011
8.985
8.962
8.942
8.921
8.903
8.885
8.868
8.850
8.833
105