The concentration of hydrogen ion in a solution can be expressed as nmol per liter or pH.
pH =
= (-1) * LOG10(hydrogen ion concentration)
hydrogen ion concentration in nmol/L =
= 10^(9 - pH)
where:
• nmol/L equals nEq/L
Note that while the interval between pH units is linear, this is not the case for concentration in nmol/L.
|
pH
|
nmol/L
|
|
6.8
|
158.49
|
|
6.9
|
125.89
|
|
7
|
100.00
|
|
7.1
|
79.43
|
|
7.2
|
63.10
|
|
7.3
|
50.12
|
|
7.4
|
39.81
|
|
7.5
|
31.62
|
|
7.6
|
25.12
|
|
7.7
|
19.95
|
|
7.8
|
15.85
|
|
7.9
|
12.59
|
