39
SALINITY COMPENSATION
If the sample contains significant concentration of salinity, the read out values must be corrected, taking into
account the lower degree of oxygen solubility in this situation.
Before taking any DO measurements remember to set the salinity value from the DO setup menu.
The salinity affects the DO concentration, decreasing its value. The table below shows the maximum oxygen solubility
at various temperatures and salinity levels.
C
º
l
e
v
e
L
a
e
S
t
a
)l
/
g
(
y
ti
n
il
a
S
F
º
l/
g
0
l/
g
0
1
l/
g
0
2
l/
g
0
3
l/
g
5
3
0
0
6.
4
1
4
6.
3
1
4
7.
2
1
0
9.
1
1
0
5.
1
1
0.
2
3
2
1
8.
3
1
1
9.
2
1
7
0.
2
1
9
2.
1
1
1
9.
0
1
5.
6
3
4
9
0.
3
1
5
2.
2
1
7
4.
1
1
3
7.
0
1
8
3.
0
1
2.
9
3
6
4
4.
2
1
5
6.
1
1
1
9.
0
1
2
2.
0
1
9
8.
9
8.
2
4
8
3
8.
1
1
9
0.
1
1
0
4.
0
1
5
7.
9
4
4.
9
4.
6
4
0
1
8
2.
1
1
8
5.
0
1
3
9.
9
2
3.
9
3
0.
9
0.
0
5
2
1
7
7.
0
1
1
1.
0
1
0
5.
9
2
9.
8
5
6.
8
6.
3
5
4
1
9
2.
0
1
8
6.
9
0
1.
9
5
5.
8
0
3.
8
2.
7
5
6
1
6
8.
9
8
2.
9
3
7.
8
1
2.
8
7
9.
7
8.
0
6
8
1
5
4.
9
0
9.
8
9
3.
8
0
9.
7
6
6.
7
4.
4
6
0
2
8
0.
9
6
5.
8
7
0.
8
0
6.
7
8
3.
7
0.
8
6
2
2
3
7.
8
3
2.
8
7
7.
7
3
3.
7
2
1.
7
6.
1
7
4
2
0
4.
8
3
9.
7
9
4.
7
7
0.
7
7
8.
6
2.
5
7
5
2
4
2.
8
9
7.
7
6
3.
7
5
9.
6
5
7.
6
0.
7
7
6
2
9
0.
8
5
6.
7
3
2.
7
3
8.
6
4
6.
6
8.
8
7
8
2
1
8.
7
8
3.
7
8
9.
6
1
6.
6
2
4.
6
4.
2
8
0
3
4
5.
7
4
1.
7
5
7.
6
9
3.
6
2
2.
6
0.
6
8
2
3
9
2.
7
0
9.
6
4
5.
6
9
1.
6
3
0.
6
6.
9
8
4
3
5
0.
7
8
6.
6
3
3.
6
1
0.
6
5
8.
5
2.
3
9
6
3
2
8.
6
7
4.
6
4
1.
6
3
8.
5
8
6.
5
8.
6
9
8
3
1
6.
6
8
2.
6
6
9.
5
6
6.
5
1
5.
5
4.
0
0
1
0
4
1
4.
6
9
0.
6
9
7.
5
0
5.
5
6
3.
5
0.
4
0
1
2
4
2
2.
6
3
9.
5
3
6.
5
5
3.
5
2
2.
5
6.
7
0
1
4
4
4
0.
6
7
7.
5
8
4.
5
1
2.
5
9
0.
5
2.
1
1
1
6
4
7
8.
5
1
6.
5
3
3.
5
7
0.
5
7
9.
4
8.
4
1
1
8
4
0
7.
5
7
4.
5
0
2.
5
5
9.
4
5
8.
4
4.
8
1
1
0
5
4
5.
5
3
3.
5
7
0.
5
3
8.
4
5
7.
4
0.
2
2
1
Note
Note
Note
Note
Note:
The relationship between salinity and chlorinity for sea water is given by the equation below:
Salinity (g/l) = 1.80655 Chlorinity (g/l)
