Masks Bacterial Filtration Efficiency (BFE) testing equipment test procedure


Masks Bacterial Filtration Efficiency (BFE) testing equipment test procedure:

 
1. Start the instrument and perform air cleaning.
 
2. Install the Staphylococcus aureus solution, start the peristaltic pump and supply the solution to the tip of the sprayer.
 
3. Install the mouthpiece sample in A-way, B-way as positive QC, and install the flat dish into the Anderson sampler.
 
4. Set instrument parameters.
 
5. Remove the sampled flat dishes, mark the layer number and place them in the incubator to count the positive pore count values for each layer of the plate.
(BFE) testing equipment
6. Calculate the result, BFE=(positive QC average - sum of experimental sample counts)/positive QC average*100% 

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