User's Manual

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.

Cº

leveLaeSta)l/g(ytinilaS

Fº

l/g0l/g01l/g02l/g03l/g53

006.4146.3147.2109.1105.110.23

218.3119.2170.2192.1119.015.63

490.3152.2174.1137.0183.012.93

644.2156.1119.0122.0198.98.24

838.1190.1104.0157.944.94.64

0182.1185.0139.923.930.90.05

2177.0111.0105.929.856.86.35

4192.0186.901.955.803.82.75

6168.982.937.812.879.78.06

8154.909.893.809.766.74.46

0280.965.870.806.783.70.86

2237.832.877.733.721.76.17

4204.839.794.770.778.62.57

5242.897.763.759.657.60.77

6290.856.732.738.646.68.87

8218.783.789.616.624.64.28

0345.741.757.693.622.60.68

2392.709.645.691.630.66.98

4350.786.633.610.658.52.39

6328.674.641.638.586.58.69

8316.682.669.566.515.54.001

0414.690.697.505.563.50.401

2422.639.536.553.522.56.701

4440.677.584.512.590.52.111

6478.516.533.570.579.48.411

8407.574.502.559.458.44.811

0545.533.570.538.457.40.221

NoteNote

Note: The relationship between salinity and chlorinity for sea water is given by the equation below:

Salinity (g/l) = 1.80655 Chlorinity (g/l)