Can you use regular glasses with a full face mask?
No, it causes leakage between the mask and face and provides a large reduction in the protection. Use instead, spectacle kit SR 341.
How do I store a gas filter in the best way before the next use?
In a clean and dry area at room temperature in a tightly sealed container for example a plastic bag.
What does the label R and NR on particulate and combined filters means?
R = Reusable means that it may be reused. NR = Not Reusable means it is used only for one shift.
What filters do you use when you spray paint?
If the paint is solvent-based, use a brown A-filter SR 217 A1 or SR 218 A2 combined with a particle filter SR 510 P3 R and pre-filter SR 221.
What is the difference between Nominal Protection Factor (NPF) and the Assigned Protection Factor (APF)?
The nominal protection factor is based on laboratory measurements and is the lowest level that a respirator must meet. The assigned protection factor is based on workplace measurements and the actual protection factor as a trained operator is expected to achieve.
Why does it smell in the mask even though I changed the gas filter?
A mask can leak for several reasons. It is not sealing tight against your face - Try to test with the test disc SR 322. Try a different size. Clean-shaven? Are membranes on exhalation valves clean? Is the correct filter/filters used?
Why has a full face mask higher protection factor than a half mask?
A full face mask has larger contact surfaces on your face and a stronger head harness that holds the mask in place, thus reducing the risk of leakage between the mask and face.
Why is Silica dangerous and which respirators should be used?
Silica dust inhalation may cause diseases such as ”silicosis”, which is an chronic lung disease. It may also take many years (10-30) before the disease is detected after being exposed to silica. The disease mainly affects people who work in construction, foundries, mining and quarries. Use respiratory protection unless the silica dust level can be kept below the limit 0.1 mg/m3. Respiratory protection should be at least a half mask respirator with P3 filter that is effective against silica dust.
Why one must use pre-filter SR 221?
Pre-filter captures coarse dust and particles, are changed frequently and extends the life of Particle filter SR 510 P3 R
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