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Installation instructions:

1.With nosepiece facing away from you.Holdthe earloop in each hand with the nosepiece up.
2.Position the respirator under the chin.
3.Pull each strap over the ear. Adjustthestraps as comfortable as possible.
4.Place the fingertips of both hands atthetops of the nosepiece. Mold the nosepiece to the shape of the nose bridgebypushing inwards while moving your finger tips down both sides of thenosepiece.Pinching the respirator using only one hand may result in lesseffectiverespirator fit.
✔If it very important to press the nosepiece firmly to the nose bridge to from a good seal.

Replacement ：

1.Open the mask,revealing the internalvalve filter.
2.Follow the open instructions on thevalve , counter clockwise rotationof the valve, separation the air valve.
3.Take down two valves,remove the filter.
4.Change a new filter,fllow the closeinstructions on the valve,clockwis