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Exposure category limits. *Category E is based on the TTC and would vary depending on the genotoxicity and Cramer class of the chemical
| Cat A (mg/kg) | Cat B (mg/kg) | Cat C | Cat D | Cat E* (μg/kg) | |
|---|---|---|---|---|---|
| 1 day | > 50 | 20–50 | 3–20 mg/kg | 0.0025 μg/kg–3 mg/kg | < 0.0025 |
| Intermittent/short term | > 10 | 4–10 | 40 μg/kg–4 mg/kg | 0.0025–40 μg/kg | < 0.0025 |
| Long term | > 10 | 1–10 | 10 μg/kg–1 mg/kg | 0.0025–10 μg/kg | < 0.0025 |
