There are two types of respirator fit tests: Quantitative and Qualitative
The main difference between the fit test methods is that qualitative testing relies subjectively on the wearers taste, smell, and their ability to detect leakage. By contrast, quantitative fit testing objectively measures the existence of leakage around the seal and also the amount of leakage that is occurring.

Quantitative fit testing is considered the gold standard for workers exposed to hazardous particles in the workplace, and it is this methodology that Occupational Team Solutions uses to fit test in the workplace.