Iso 14644-3.pdf

How fast can a cleanroom recover from a contamination event (e.g., a door opening or filter change)? This test measures the time needed for particle concentration to drop by a factor of 10 or 100 after a controlled challenge. It is the ultimate test of HVAC design and air change effectiveness.

Is your unidirectional (laminar) flow actually uniform? This test measures: Iso 14644-3.pdf

This section destroys the myth of "velocity averaging." How fast can a cleanroom recover from a

Previously known as the "scanning test." The Iso 14644-3.pdf details two approaches: Iso 14644-3.pdf