Filtration Efficiency Tester

Product Details:

Medical Masks bacterial filtration efficiency tester also called BFE test machine is to determine the bacterial filtration efficiency ofmedical face mask materials by employing a ratio of the upstreambacterial challenge to downstream residual concentration of thetested medical face mask materials. The BFE tester providescertain flow rate of bacterial aerosol. The operator can measurethe number of colony forming units passing through the medicalface mask material, which is clamped between a six-stageAnderson cascade impact or and an aerosol chamber, expressedas a percentage of the number of colony forming units present in the challenge aerosol.