A qualitative fit test is an integral part of any safety program. In this article, we will discuss qualitative fit testing and the three most common methods used: the sound method, the bubbler method, and the smoke hood method.
The Sound Method
This method uses a loud tone, similar to that of a tuning fork, to check for leaks. The person being tested wears the mask and is instructed to cover it with their hand completely. If they can hear the tone, it means there is a leak.
The Bubbler Method
This method uses a device that emits vapor bubbles. The person being tested covers the mask completely with their hand, and if they see any bubbles, it means there is a leak.
The Smoke Hood Method
This method uses cigarette or incense stick smoke to check for leaks. The person being tested covers the mask completely with their hand; if they see any smoke coming through, it means there is a leak.
To conclude, qualitative fit testing tests the fit of a respirator to the individual wearer. There are three main methods of qualitative fit testing: the saccharin solution, the bubbler method, and the smoke hood method. Qualitative fit testing is a quick and easy way to test for proper fit, but it does have some limitations.
