Frequently asked questions about Half Facepiece
1. How tight is the Half Facepiece
The Half Facepiece body is made of natural soft colloid, which is specially designed for the face shape and the bridge of the nose. It fits perfectly with the face and has a good sealing effect; with an adjustable headband, the tightness of the half facepiece can be adjusted to strengthen the sealing effect.
2.When to change the filter cotton/ box?
It depends on the chemicals and/or particles you breathe.If the filter cotton is dirty or wet or you feel increased breathing resistance, replace the filter cotton immediately
3.Is this half facepiece suitable for brake dust and gasoline?
Not only suitable for brake dust and gasoline,but also suitable for pollution, ash,grinding, organic vapor/gas, smoke, pollen, dust and other particles in the air