Proper Techniques for selecting and fitting Respirators

Understanding Respirators

A respirator is a protective device that is used to protect individuals against inhaling hazardous substances, including harmful dusts, fogs, fumes, gases, mists, vapors, and sprays. Thus, a respirator is a critical Personal Protective Equipment (PPE) that is used to protect workers from workplace hazards. Due to the potential risks involved in selecting and fitting respirators, it is essential to use proper techniques when selecting, using, and maintaining them.

Proper Techniques for selecting and fitting Respirators 1

Risk Assessment

Prior to selecting a respirator, it is important to evaluate the potential risks in the workplace. There are various types of respirators, each suited for different types of workplace hazards. To determine the most appropriate respirator to use, one should evaluate the concentration level and type of hazardous substance present, as well as the physical form of the substance. A comprehensive hazard assessment can be conducted using information contained in Material Safety Data Sheets (MSDS), workplace monitoring, and professional advice from safety experts.

Respirator Selection and Fit

After performing a hazard assessment, one can select the appropriate respirator that meets the required protection factor and is best suited to the specific environment. Effective respirator selection should take into account the fit, comfort, and ease of use, as well as the type, concentration, and physical state of the hazard. There are two types of respirators: air-purifying respirators (APRs) and atmosphere-supplying respirators (ASRs).

APRs are designed to eliminate certain particles or gases before they enter the wearer’s lungs. They are suitable for environments where the particulate or gas concentration is below the Occupational Safety and Health Administration’s (OSHA) Permissible Exposure Limits (PEL). On the other hand, ASRs are used in work environments where the hazard exceeds the PEL or in the absence of adequate ventilation systems. ASRs are available in two types: Self-Contained Breathing Apparatus (SCBA) and Supplied-Air Respirators (SARs).

The respirator fit test will determine whether the respirator seals well to the wearer’s face and if it fits properly. There are two basic fitting techniques: qualitative and quantitative fit tests. The qualitative method uses a subjective response of the individual wearing the respirator, while the quantitative method uses a scientific approach to measure the match between the face and respirator.

Maintenance and Storage of Respirators

Respirators must be maintained and stored properly to remain effective. Regular maintenance should include washing the respirator components, checking the elasticity of straps, and ensuring that the valve function is adequate. Respirator storage should keep moisture and temperature out of the respirator, thus preventing valve and filter damage. It is important to store respirators in clean, dry places where they will not be damaged or exposed to harsh environmental conditions such as heat, sunlight, or chemicals. It is also important to ensure that respirators are available in emergency situations.


Selecting and fitting respirators is a complex process that requires attention to detail and proper technique. By conducting a proper hazard assessment, choosing the appropriate respirator, and ensuring a good fit, one can protect against hazardous substances and their associated risks. The efficacy of respirators can also be maximized by properly maintaining and storing them to ensure that they remain effective. By following the discussed techniques, individuals can work in hazardous environments with minimal exposure to harmful particles, gases, and vapors. To enhance your learning experience, we suggest checking out VestMed Services. You’ll uncover more pertinent details related to the topic covered.

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