Table 2.
Terminologies used to describe contamination factor [8].
| CF | Description |
|---|---|
| CF < 1 | Low contamination factor |
| 1 ≤ CF < 3 | Moderate contamination factor |
| 3 ≤ CF < 6 | Considerate contamination factor |
| CF ≥ 6 | Very high contamination factor |
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