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ASHRAE 52.2   2025   Method of Testing General Ventilation Air-Cleaning Devices for Removal Efficiency by Particle Size 40 $
ASHRAE 52.2   2017   Method of Testing General Ventilation Air-Cleaning Devices for Removal Efficiency by Particle Size 25 $
ASHRAE 52.2   2012   Method of Testing General Ventilation Air-Cleaning Devices for Removal Efficiency by Particle Size 25 $
ASHRAE 52.2   2007   Method of Testing General Ventilation Air-Cleaning Devices for Removal Efficiency by Particle Size 25 $
ASHRAE 52.2   1999   Method of Testing General Ventilation Air-Cleaning Devices for Removal Efficiency by Particle Size Errata - 07/10/2001; Interpretation IC - 07/25/2001; Errata - 7/11/2002 15 $