Establishes uniform laboratory methods of testing PPVs in order to determine performance in terms of flow rate, pressure, air density, and speed of rotation for rating or guarantee purposes. Prior to this standard, PPV's were tested in accordance with ANSI/AMCA Standard 210-85. Due to their design some PPVs could be tested using standard 210 and some could not. This standard provides a single method of test applicable to all PPVs and uses a test setup that resembles real world applications of PPVs.