HI-Q - Model FHA-Series -Calibration Adapter Plates (High Flow)

HI-Q Environmental Products Company’s “FHA-Series” adapters are designed to reduce overall pressure drop found during the calibration of standard 4” diameter and 8” x 10” filter paper sampling applications. The FHA’s unique design reduces the overall paper to adapter fitting contact, thereby allowing the maximum obtainable free cross-sectional surface area through which unrestricted air can pass. This is done to duplicate the conditions of ambient air, open face, sampling procedure’s and to reduce the overall error in calibration.