Portwest Mask Filters & Accessories
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More About Mask Filters & Accessories
Choosing the correct filter type is vital.
There are 3 main filter types:
• Particle filter (P sign and filtration efficiency number 1, 2 or 3)
•
Gas/vapour filter
• Combined filters (for particles, gases & vapours)
Particle filters are divided into three classes:
• P1: low efficiency filters
• P2: medium efficiency filters
• P3: high efficiency filters
Gas/Vapour
filters are also divided into three classes:
• A1/B1:low capacity filter
•
A2/B2: medium capacity filters
• A3/B3: high capacity filters
These can
then further divided according to the gases they protect against.
Filters can
also be combined or multi type.
For further information refer to IS EN 133
Respiratory Protective Devices-Classification.
Maintenance is a
requirement for all RPE, except for disposable (single use) RPE,and should be
carried out by properly trained personnel.
Filters only have a limited
lifespan, and should be changed when necessary to make sure the
RPE device can remain effective.
Use the appropriate cleaning materials and
disinfectants
Key maintenance tasks include:
•Changing any replaceable filters
•Cleaning the device
•Valve maintenance
and replacement
•Checking the straps for damage
•Checking the battery
charge and flow rate for powered devices.
