Last Updated
：2025/12/07
fit factor
Noun
Japanese Meaning
特定の個人の顔に対するマスクや呼吸保護具のフィット（適合度）を定量的に示す指標。具体的には、周囲のエアロゾル濃度と、使用中のマスク内部のエアロゾル濃度の比率として定義される。
（ plural ）
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A quantitative metric that measures how well a particular mask or respirator fits to a specific individual's face, defined as the ratio of the ambient concentration of aerosol particles to the concentration within the facepiece during use.
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fit factor
Before issuing the respirators, the safety officer measured the fit factor to ensure each mask provided adequate protection for the wearer.
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Before issuing the respirators, the safety officer measured the fit factor to ensure each mask provided adequate protection for the wearer.
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