Qualitative fit testing is a method used to determine if a respirator fits an individual properly. This testing relies on the userâs sensory detection of a test agent, such as saccharin or Bitrex, to identify any leaks in the respiratorâs seal. Unlike quantitative fit testing, which uses machines to measure fit, qualitative testing is a simpler, subjective process. It is typically used for half-mask respirators and is often employed in various industries, including those dealing with toxic substances, to ensure worker safety.
