Time [hr]
50
100
150
200
250
275
C
I1
[mg/l]
3,40
3,72
3,96
4,15
4,32
4,49
C
I2
[mg/l]
3,48
3,94
4,28
4,60
4,86
4,90
C
I3
[mg/l]
3,13
3,54
3,84
4,13
4,38
4,46
Table 2:
Comparison of the oxygen concentration reached by chosen samples during long term testing.