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Qualitative Fit Testing
A pass/fail test method that uses your sense of taste in order to detect leakage into the respirator facepiece. Whether the respirator passes or fails the test is based simply on you detecting leakage of the test substance into your facepiece. Two qualitative fit test methods accepted by OSHA are:
Saccharin, which leaves a sweet taste in your mouth;
Bitrex, which leaves a bitter taste in your mouth
Quantitative Fit Testing
Quantitative fit testing uses a machine to measure the actual amount of leakage into the facepiece and does not rely upon your sense of taste, smell, or irritation in order to detect leakage. The respirators used during this type of fit testing will have a probe attached to the facepiece that will be connected to the machine by a tube. A minimum fit factor of 100 is needed for an N95 respirator.
Training and Certification
Employees who are required to use respirators will be trained such that they can demonstrate knowledge of the following:
- Why the respirator is necessary and how improper fit, use, or maintenance can compromise its protective effect
- Limitations and Capabilities of the Respirator
- How to inspect, donning, and doffing; the user checks the seals
- Proper maintenance and storage of the respirator
- Recognition of medical signs and symptoms that may limit or prevent the effective use of the respirator
- General requirements of OSHA CFR 1910.134 protective standard