F891V Instructions for Use

 

1.Place under chin and press the mask freely against your face with the nose clip on the bridge

of your nose

2.Block the mask on the chin and pass the head harness overhead with the thumbs and the

index fingers.Place the superior head harness on the top of the skull.Release the inferior

head harness and place it on the neck

 

3.Using both hands， mold the metal nose clip to the shape of nose

4.To check for proper fit， cup both hands over the mask and exhale vigorously.

If air leaks around the nose， tighten the nose clip， if air leaks around the edge， reposition the

head harness for better fit

5.Double check the seal and repeat the procedure until the mask is sealed properly.

6.Entry into a contaminated area with an improper fitting mask may result in illness or death

Source: https://www.unisourcesgroup.com/Facemask/FFP3/12.html