When writing protocols, explicitly cite Part 6 for terms like "recovery test" and "leak test." It makes your reports audit-proof.

| Part | Title | Status | | :--- | :--- | :--- | | | Classification of air cleanliness | Active (2015) | | Part 2 | Monitoring to provide evidence of compliance | Active (2015) | | Part 3 | Test methods | Active | | Part 4 | Design, construction and start-up | Active | | Part 5 | Operations | Active | | Part 6 | Vocabulary | Withdrawn (2007) | | Part 7 | Separative devices | Active | | Part 8 | Classification of air cleanliness by chemical concentration | Active |

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