Which respirators offer the highest level of filtration for airborne particles?

1 N95 Respirators

N95 respirators are a common choice for many industries due to their effectiveness in filtering out at least 95% of airborne particles. These respirators are certified by the National Institute for Occupational Safety and Health (NIOSH) and are designed to achieve a close facial fit, which is key to their performance. The "N95" designation means that when subjected to careful testing, the respirator blocks at least 95% of very small (0.3 micron) test particles. If properly fitted, the filtration capabilities of N95 respirators exceed those of face masks.

2 P100 Devices

For a step up in filtration efficiency, P100 devices provide an even higher level of protection. These respirators are capable of filtering out 99.97% of airborne particles, making them one of the most efficient on the market. Like N95s, P100 respirators are also certified by NIOSH. The 'P' in P100 stands for 'oil proof', which means they can also protect you from oil-based particles, a feature not found in all respirator types.

3 Elastomeric Masks

Elastomeric masks are reusable respirators with replaceable filters or cartridges, and they offer a durable and cost-effective solution for ongoing protection. These masks are made from soft materials that mold to the face to create a tight seal, and they can be equipped with various types of filters, depending on the specific airborne hazards you're dealing with. While more robust than disposable masks, they require regular maintenance and a proper fit-testing program.

4 Powered Air-Purifying

Powered air-purifying respirators (PAPRs) use a battery-powered blower to pull air through attached filters or cartridges. The purified air is then delivered to a mask or hood, providing a continuous supply of clean air. PAPRs offer several advantages, including reduced breathing resistance and the ability to use higher efficiency filters, making them suitable for prolonged use in environments with high particulate concentrations.

5 Respiratory Selection

Selecting the right respirator involves considering the specific environment and the types of particles you need to filter. It's important to conduct a thorough hazard assessment and consider factors like the nature of the work, the presence of any oil-based aerosols, and the desired balance between protection and comfort. Ensuring that your team is trained on how to properly use and maintain their respirators is also critical for effective protection.

6 Fit Testing Importance

Finally, no matter how high the filtration level of a respirator, its effectiveness is compromised if it doesn't fit properly. Fit testing is an essential step to ensure that a respirator forms a proper seal around the face. Annual fit testing is recommended, or more frequently if there are changes in the wearer's facial structure. It's also essential that users perform a user seal check each time they put on the respirator to confirm it's fitted correctly.