['Personal Protective Equipment']

['Respiratory Protection']

03/12/2025

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Can QLFT be used to test the fit of a full facepiece negative pressure air purifying respirator?

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Can QLFT be used to test the fit of a full facepiece negative pressure air purifying respirator?

RegSense Personal Protective Equipment Safety & Health Construction Safety General Industry Safety Best Results FAQ Respiratory Protection English Focus Area USA

The factor that limits the use of QLFT is the concentration of the air contaminant in which it is being worn. If the full facepiece respirator is only being worn in air contaminant concentrations that are equal to or less than ten times the PEL, then QLFT can be used. However, it cannot be used in air concentrations greater than ten times the PEL unless it is fit tested using a quantitative fit test (QNFT).

['Personal Protective Equipment']

['Respiratory Protection']

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