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Method for in vitro determination of bacterial filtration efficiency (BFE) Test apparatus
Date: Mar 25,2020 Views: 633
Test apparatus 1 Six stage cascade impactor, the arrangement is specified in Table B.1.
2 Nebulizer, capable of delivering particles with a mean size of (3,0 ± 0,3) μm when in
contact with the cascade impactor.
3 Aerosol chamber, glass, 600 mm long and 80 mm in external diameter.
4 Flow meters, capable of measuring a flow rate of 28,3 l/min.
5 Pressure gauge, capable of measuring a pressure of 35 kPa to an accuracy of ± 1 kPa.
6 Erlenmeyer flasks, 250 ml and 500 ml capacity.
7 Peristaltic or syringe pump, capable of delivering 0,01 ml/min.
8 Vacuum pump, capable of maintaining a flow rate of 57 l/min.
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