What is required to ensure the full protective capability of a respirator?

For a respirator to provide its full protective capability, it is essential that it fits properly and creates a good seal. This is crucial because any gaps between the respirator and the face can allow contaminated air to enter, undermining the effectiveness of the respiratory protection. A proper fit ensures that the respirator effectively filters out harmful airborne substances, such as dust, aerosols, or gases.

When a respirator does not have a good seal, it cannot perform its intended function of protecting the wearer from inhaling hazardous materials. Proper fit testing is often required to ensure that the respirator is suitable for the individual's facial structure. Additionally, regular checks and maintenance of the respirator are essential to maintain its protective qualities.

The other options do not address the critical aspect of fit and seal. Wearing a respirator for only a brief period may not provide adequate protection during exposure, while the idea that only specific brands should be used does not inherently guarantee proper fit. Wearing a respirator without any other protective gear could be dangerous if the situation requires additional protection; the effectiveness of a respirator is independent of the presence of other safety equipment.