Forma® Laminar Airflow Workstations create ultra clean Class 100 (M3.5) air for operations requiring particle-free environments. Intake air passes through a 1"e;e; fiberglass prefilter. The blower/motor unit then moves the air through a zero-probed, HEPA filter rated at 99.99% efficient for 0.3 micron particulates. The HEPA filtered air is then directed horizontally across the work surface. Positive pressure, unidirectional laminar airflow prevents any inflow of room air contaminants onto the work surface.