| Bottle No. |
Sample vol. in 1 lit er |
Dilution in % |
Initial DO m/l |
Incubated |
Final DO mg/l |
DO drop |
BOD |
| A (35KHz) |
10 |
1 |
9.25 |
5 days |
5.89 |
3.36 |
336 |
| B (35KHz) |
10 |
1 |
8.85 |
5 days |
5.62 |
3.23 |
323 |
| C (35KHz) |
10 |
1 |
8.45 |
5 days |
5.8 |
2.6 |
260 |
| D (35KHz) |
10 |
1 |
8.3 |
5 days |
5.8 |
2.5 |
250 |
| A1(130KHz) |
10 |
1 |
9.25 |
5 days |
6.75 |
2.5 |
250 |
| B1 (130KHz) |
10 |
1 |
7.42 |
5 days |
6.55 |
2.3 |
230 |
| C1(130KHz) |
10 |
1 |
7.3 |
5 days |
6.05 |
2.0 |
200 |
| D1(130KHz) |
10 |
1 |
7.29 |
5 days |
5.74 |
1.9 |
190 |
| Control |
10 |
1 |
9.5 |
Untreated |
6.0 |
3.5 |
350 |
|
