Table 2.
Toxicity classification based on the sea-urchin embryo test Toxic Units (TU).
| EC50 (mg/L) | TU | Toxicity |
|---|---|---|
| >10,000 | <1 | None |
| 2000–10,000 | 1 ≤ TU< 5 | Slight |
| 400–2000 | 5 ≤ TU< 25 | Relevant |
| <400 | ≥25 | High |
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