5 2

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. HEPA . .

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polysulfone, polycarbonate, polypropylene, polystyrene ( ) . , . , . , .

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. . .

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, .

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IVR .

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, , , . National Research Council . . 3-5g . , .

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. , , . . , , .

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. . 6-7ml . . , . . .

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