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Technical considerations and recommended action according to the daily doses found in the assessed exposure condition
| 0 to 50 | Acceptable | At least maintenance of the existing condition |
| 50 to 80 | Above the level of action | Adoption of prevention measures |
| 80 to 100 | Region of uncertainty | Adoption of preventive measures aimed at reducing the daily dose |
| Above 100 | Above the exposure limit | Immediate adoption of corrective measures |
Source: Occupational Hygiene Standard 01 (NHO 01).5
