To fit a dust mask properly, pull the bottom strap over your head to the back of your neck, then pull the top strap over your head so it sits above your ears and over the crown of your head. Ensure the straps are not twisted.
Here's a more detailed breakdown:
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Position the Mask: Place the dust mask over your nose and mouth.
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Secure the Bottom Strap: Pull the bottom strap over your head and position it around the back of your neck, below your ears.
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Secure the Top Strap: Pull the top strap over your head and position it above your ears and on the crown of your head.
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Adjust the Fit:
- Make sure the mask fits snugly against your face.
- Adjust the nose clip (if present) to conform to the shape of your nose. This helps create a seal and prevent air from leaking.
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Check the Seal (Fit Check):
- Positive Pressure Test: Gently exhale. If you feel air leaking around the edges of the mask, readjust the straps and nose clip until you achieve a better seal.
- Negative Pressure Test: Gently inhale. The mask should pull slightly inward against your face. If you feel air leaking around the edges, readjust the straps and nose clip until you achieve a better seal.
Repeat these tests each time you put on the mask. It's crucial to have a proper seal for the mask to effectively protect you from dust and other airborne particles.
