
ACA Clearance
Pollutant clearance testing
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What's New in ACA Clearance
2.0.1
October 29, 2026
• Zone containment: full, reduced or none (work at source). The small scale of an element no longer decides it. • Air measurement optional when all elements are small-scale or the zone has no containment: offered, never required. • Detection limit: the report keeps the laboratory's least favourable value; a limit above the limit value no longer clears the zone. • Report: the reason for a refusal is stated as it is — measured exceedance, detection limit, laboratory upper bound or visual finding. • A new report version carries its own issue date. • Zone check: points established by the elements now show as checked. • Forgot password: the code from the email is entered in the app. One more laboratory is recognised on import.
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