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Table 1: Bacterial filtration efficiency levels.2 |
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Type 1 |
Type 2 |
Type 3 |
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BFE% ASTM F2101 |
≥ 95 |
≥ 98 |
≥ 98 |
|
PFE% ASTM F2299 |
≥ 95 |
≥ 98 |
≥ 98 |