

Possible contamination due to exposure of clean-room environment or personnel to process media can be unacceptable in high toxic applications. An Isolator unit under light vacuum (100 Pa) that provides uncompromised and continuous isolation of its interior from the external environment is necessary in this case.
| Categories | Hazard Description |
|---|---|
| OEL 1 | Harmful, and / or low pharmacological activity |
| OEL 2 | Harmful, and / or moderate pharmacological activity |
| OEL 3 | Moderately toxic and / or high pharmacological activity |
| OEL 4 | Toxic and / or very high pharmacological activity |
| OEL 5 | Extremely toxic and / or extremely high pharmacological activity |
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