HVAC Air filter

w   Testing standard:

  ISO 16890 Air filters for general ventilation:

        Part 1: Technical specifications, requirements and classification system based upon particulate matter efficiency (ePM)

        Part 2: Measurement of fractional efficiency and air flow resistance

        Part 3: Determination of the gravimetric efficiency and the air flow resistance versus the mass of test dust captured

        Part 4: Conditioning method to determine the minimum fractional test efficiency

EN 779:2012 Particulate air filters for general ventilation. Determination of the filtration performance

  ASHRAE 52.2-2017 Method Of Testing General Ventilation Air-Cleaning Devices For Removal   Efficiency By Particle Size

w   Testing standards：

     EN 779:2012、

     ASHRAE52.2:2017、

     ISO 16890:2016、

     Breach testing (Burst pressure)

 w   Testing Items:

Initial efficiency,

Initial pressure drop

Air flow rate vs. pressure drop

Efficiency after different dust loading phases

Dust loading capacity

 w   System specification：

Air flow rate: 500~2500 CFM (850~4250 CMH)

Maximum resistance: 6000 Pa

Aerosol range: 0.3~10μm (KCl)；0.2~3 μm (DEHS)

ISO 16890 Filter Classification

EN 779 Filter Classification

ASHRAE 52.2 Filter Classification

Comparison of HVAC air filter testing standards