FLT

Cartrige filters

We supply paper according to the desired thickness, width, and length for your filter equipment. Products in different sizes are available in our stocks according to the filtering and permeability flow rates of the material used in the paper filter.

The determination of the filter performance of particulate filters for general room air technology has been described by the industry standard EN 779: 2012.

EN 779:2012 standard is a certification program applicable to air filter elements rated and sold as “Medium and Fine Filters Class M5, M6, and F7 to F9.”

For coarse filters, the filter effect is evaluated by measuring the initial gravimetric arrestance when challenging the filter with synthetic test dust using ASHRAE-test dust. For fine filters, the filter effect is evaluated by measuring the efficiency against 0.4-micron DEHS droplets.

ISO 16890 is the new global standard for air filter testing and classification and replaces the existing EN
779: 2012 standard. This new standard represents a major turning point in the evaluation of filter efficiency.
• ISO Coarse (assessment of the separation of ISO A2 dust)
• ISO PMlO: particle size ≤ lO µm
• ISO PM2.5: particle size ≤ 2.5 µm
• ISO PMI: particle size ≤ l µm
• ISO 16890 classifications are based on where particles are deposited in the human lung.