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ASHRAE 52.1 and 52.2 Test Dust

ASHRAE Test Dust #1 is formulated to specifications shown per ANSI/ASHRAE Standard 52.1 and 52.2.  It is designed for testing filters and components of heating, refrigeration and air conditioning systems. ASHRAE Test Dust #1 has also been used in testing of electronic equipment as well as other industrial and household components. ASHRAE Test Dust #1 is a custom blend of 72% ISO 12103-1, A2 Fine Test Dust, 23% powdered carbon and 5% milled cotton linters.