General information
- Half masks cover the nose, mouth and chin.
- They are supplied in different shapes and sizes.
- This type relies on the wearer's breathing to pull the air through the filter.
- Some models may have an outlet valve, providing improved comfort for the wearer.
- Disposable half-mask respirators are uncomfortable to wear continuously for more than 1 hour.
- They can be made with Low efficiency (P1), Medium efficiency (P2) or High efficiency (P3) particle filters.
- R-marked types: as a practical measure, do not use for more than three days unless advised by the manufacturer.
- This RPE is designed for a single shift and should be thrown away at the end of the task, shift or day. However, some newer models may be reused, marked R on the RPE.
- They are all right for light work (work activity when seated) and medium work rate (work activity involving sustained hand and arm movements, or similar to brisk walking).
Do
- Fit the straps as recommended.
- Train users to use the RPE correctly.
- Select the right size mask for each wearer.
- Select the right efficiency filter for your substance.
- Fit-test for each wearer when using this RPE for the first time.
- Ensure that wearers check the RPE fits correctly every time, as recommended by the manufacturer.
Don't
- Store in dirty areas.
- Get dirt inside the mask.
- Make DIY modifications to the RPE.
- Use against gases or solvent vapours.
- Use a damaged respirator – filtering surface, straps or valve.
- Use in oxygen-deficient atmospheres, for example confined spaces.
- Use a P1 filter against fume unless recommended by the manufacturer.