DO700-en-GB_v2.3 3/15
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Appendix C - DO of Saturated Water vs Barometric Pressure and Temperature
Barometric pressure
Dissolved Oxygen Concentration (mg/L)
mmHg
kPa
15
o
C
25
o
C
35
o
C
750
100.00
9.94
8.14
6.85
751
100.13
9.96
8.15
6.86
752
100.26
9.97
8.16
6.87
753
100.40
9.98
8.17
6.88
754
100.53
9.99
8.18
6.89
755
100.66
10.00
8.20
6.90
756
100.80
10.01
8.21
6.91
757
100.93
10.03
8.22
6.92
758
101.06
10.04
8.23
6.93
759
101.20
10.07
8.24
6.94
760
101.33
10.08
8.25
6.95
761
101.46
10.09
8.26
6.96
762
101.60
10.11
8.27
6.97
763
101.73
10.12
8.28
6.98
764
101.86
10.14
8.30
6.99
765
102.00
10.15
8.31
7.00
766
102.13
10.16
8.32
7.01
767
102.26
10.18
8.33
7.02
768
102.40
10.19
8.34
7.02
769
102.53
10.21
8.35
7.03
770
102.66
10.22
8.36
7.04
771
102.80
10.23
8.37
7.05
772
102.93
10.25
8.39
7.06
773
103.06
10.26
8.40
7.07
774
103.19
10.28
8.41
7.08
775
103.33
10.29
8.42
7.09
Conversion factor for mmHg and kPa: mmHg × 0.13333 = kPa
DO
pt
= P×DO
t
÷ 760
Note: DO
pt
= DO concentration under temperature (t), barometric pressure (P, mg/L)
P = Barometric pressure (mmHg)
DO
t
= DO concentration under temperature (t), barometric pressure (760mmHg, mg/L)
760 = Barometric pressure (mmHg)