Smoke pattern tests are conducted to confirm the unidirectional airflow exiting high efficiency particulate air i.e. HEPA filters or ultra low particulate air i.e. ULPA filters. This test provides visual evidence of airflow direction which is a useful demonstration and diagnostic of facility performance.
Smoke pattern today is of prime importance in evaluating clean room performance. This pattern indicates the air flow pattern in a room and is helpful in air flow pattern analysis. The prime function of clean room is also to maintain proper air flow to generate necessary scavenging tool. Videography is a tool which can be used for deriving above important criteria.