A protocol for determining an individual's ability to obtain a good fit with a particular size and style of respirator. Fit testing may be qualitative or quantitative.

a failure when a test subject experiences an involuntary cough or irritation

a method of ensuring that a certain respirator model and size fits an employee so that it provides adequate protection from contaminants

a method used to select the right size respirator for your face

a test carried out to verify that a tight fitting respirator issued to a worker actually fits that person

An assay method used to check the wearer= s ability to maintain a good facepiece-to-face fit with a particular respirator. It uses either a qualitative or quantitative fit test method.

The use of a protocol to qualitatively or quantitatively evaluate the fit of a respirator on an individual.

Periodic test of how well the facepiece of an SCBA fits a particular firefighter.

A quantitative or qualitative fit test performed in accordance with procedures in CSA Standard CAN/CSA-Z94.4-93, Selection, Use, and Care of Respirators.