Filtration Efficiency Testing of Meltblown Media
topic
Meltblown filtration efficiency is measured by particle filtration efficiency at 0.3 micrometre NaCl aerosol or DOP oil aerosol challenge at defined face velocities of 32 to 85 litres per minute per square centimetre, with results reported as percent filtration efficiency and pressure drop in pascals enabling quality factor calculation that optimises the balance between efficiency and resistance, with EN 149 for respirators and EN 1822 for HEPA filters defining test protocols.
Role
Provides the performance characterisation data for meltblown filter media qualification for respiratory protection, HVAC, and industrial filtration applications by measuring the two primary filtration performance parameters of efficiency and pressure drop that together determine whether the meltblown fabric meets the minimum performance thresholds required by filtration certification standards.