Qualitative and Quantitative Fit Testing: How Should an Employer Choose?

Qualitative fit testing produces a sensory pass or fail result, while quantitative fit testing uses an instrument to measure leakage and calculate a numerical fit factor.

The correct method is not simply a matter of preference.

It depends on the mask or respirator being used, the level of protection required, the workplace hazard and the organization’s respiratory protection program.

How Qualitative Testing Works

A qualitative fit test relies on the participant’s ability to detect an approved test agent.

Before testing begins a sensitivity screening confirms that the employee can detect that substance.

During the test the employee wears the mask or respirator while completing a standardized series of exercises.

If the test agent is detected, the mask or respirator does not pass. The mask can be readjusted and the test reattempted.

How Quantitative Testing Differs

Quantitative fit testing uses specialized equipment to measure leakage and produce a numerical fit factor.

It does not depend on the employee’s ability to taste or smell the test agent.

Quantitative methods may be required where the mask or respirator or required protection level cannot be adequately assessed using a qualitative method.

Start with the hazard, not the testing method

Employers should not begin by asking, “Should we book qualitative or quantitative testing?”

The better sequence is:

1. Identify the workplace respiratory hazard
2. Determine how much protection workers require
3. Select an appropriate mask or respirator
4. Determine which fit-testing method is permitted for that mask or respirator and required protection level

The test confirms fit.

It does not determine whether the mask or respirator itself was properly selected for the hazard.

Cost and Convenience Do Not Decide the Method

Qualitative testing can be practical to deploy because it does not require an instrument that calculates a fit factor.

Quantitative testing produces an objective numerical result and involves specialized equipment and procedures.

Neither method is universally “better.”

MaskFit+ is family-owned and specializes in qualitative fit testing, so we keep that distinction clear when employers are deciding what type of testing their program actually requires.
The correct method is the one appropriate for the mask or respirator and protection required by the workplace program.

What Should You Know Before Contacting a Fit-tester?

Before booking, your organization should ideally know:

• the mask or respirator manufacturer and model
• what the mask or respirator will be used for
• the workplace hazard
• the protection required, and
• which testing method your respiratory protection program requires

MaskFit+ provides qualitative mask and respirator fit testing.

If your workplace requires quantitative testing, knowing that before scheduling prevents your employees from
being booked into a service that cannot satisfy the program requirement.

Choosing the test starts with understanding the job.

Call a MaskFit+ specialist now at 289-643-6222 to book your qualitative mask fit test.