MASK FIT TESTING

PROTECTING EMPLOYEES IN HIGH-RISK ENVIRONMENTS

Respirator fit testing is especially important for workers in:

• Manufacturing & Industrial Operations (chemical exposure, metal fumes)
• Healthcare & Emergency Response (airborne infectious diseases)
• Mining & Construction (silica, dust, asbestos)
• Transportation & Warehousing (hazardous material handling)

By regularly conducting fit testing, employers can ensure their teams are safe, compliant, and properly protected in high-risk work environments.

HOW THE TESTING PROCESS WORKS

Respirator fit testing is a structured evaluation process designed to ensure that a tight-fitting respirator properly seals to an employee’s face, providing maximum protection against airborne contaminants. At NorthStream Safety & Rehab, we follow a step-by-step approach to guarantee accurate and effective testing.

STEP-BY-STEP FIT TESTING PROCEDURE

The mask fit testing process ensures that tight-fitting respirators properly seal to an individual’s face. The testing process follows these steps:

• Respirator Selection & Pre-Test Preparation – Employees select the correct mask size and style for their work environment
• User Seal Check & Fit Adjustment – The employee puts on the respirator, adjusting straps to create a snug fit
• Test Administration – The fit test is conducted using either a qualitative or quantitative method
• Evaluation of Seal Effectiveness – Employees perform specific movements (e.g., talking, bending, deep breathing) to assess the mask’s seal
• Results & Certification – A pass or fail determination is made based on the test results, and certification is issued if the respirator fits properly.

WHAT TO EXPECT DURING THE TEST

Employees undergoing fit testing can expect: A comfortable and professional testing environment, A quick and efficient testing process (typically 15-30 minutes per test), Training on how to properly wear, adjust, and maintain their respirators, Immediate feedback on whether the mask provides a proper seal

UNDERSTANDING PASS/FAIL CRITERIA

A mask fit test is considered successful if: The employee can perform all breathing and movement exercises without breaking the seal, No leakage of test agents is detected
(qualitative testing), The respirator meets the required fit factor (quantitative testing)

If an employee fails the test, they will need to retest with a different respirator size or model until a proper fit is achieved.

HOW OFTEN SHOULD FIT TESTING BE CONDUCTED?

According to CSA and OHS guidelines, fit testing must be conducted: Annually for employees who wear tight-fitting respirators, When an employee is issued a new respirator, If the employee has had facial changes (e.g., weight gain/loss, dental work, facial surgery)

Employers should ensure regular fit testing to maintain workplace safety compliance and protect employees.

TYPES OF FIT TESTING

Respirator fit testing is a critical component of workplace safety, ensuring that employees have the right level of protection in environments with airborne contaminants. There are two main types of fit testing: Qualitative Fit Testing (QLFT) and Quantitative Fit Testing (QNFT). Each method is designed for different types of respirators and workplace conditions. Understanding the differences between these tests helps employers choose the most suitable option for their safety programs.

UNDERSTANDING THE DIFFERENCES & CHOOSING THE RIGHT TEST

Choosing the right respirator fit test is crucial to ensuring employee safety, regulatory compliance, and effective respiratory protection in the workplace. The decision between qualitative fit testing (QLFT) and quantitative fit testing (QNFT) depends on the type of respirator being used, the level of protection required, and the regulatory standards that apply to your industry.