Carbon Tetrachloride (CCl
4
),
Chlorine (Cl
2
),
Hydrogen Sulphide (H
2
S),
Sulphur Dioxide (SO
2
),
Ammonia (NH
3
)
1000 ppm or 20 x OEL
Whichever is lower.
Note: OEL- Occupational Exposure Limit
Preparation for use:
Check before use:
1.
Facepiece, head harness and valves are intact and in good condition.
2.
Valve Cover is securely in position.
3.
Filter is correct for the inteded use. Filter type & class are evident from marking.
4.
Storage period of the filter has not been exceeded.
5.
Filter condition and intactness. Shake the filter to ensure that there are no loose
components/contents. The filter shall be replaced if it has been exposed to
strong press or impact. It may be damaged.
6.
Connect the filter tightly to the facepiece.
7.
Don the respirator. Check that the facepiece sits air-tight on the face.
8.
Observe the instructions for use of the facepiece
Duration of Use:
1.
The duration of use of the filter depends on its load, e.g. type and
concentration
of contaminant, wearer’s breathing cycle and other factors.
2.
The presence of odour, taste and irritation indicate that the gas filter no longer works.
3.
Filters used against detrimental gases that do not display any significant indications
i.e. (odour, taste, irritation) required special regulations for the duration of use and
correct usage.
4.
Particle and combined filters must be replaced atleast when breathing resistance
becomes too high.
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