Color: White Blue Red OrangeFor Any Mạsk To Work Best, It Must Be Able To Properly Seal Around The Nose And Mouth So That As Much Air As Possible Is Actually Drawn In Through The Filter. If The Filter Is Not Passed, The User Will Still Inhale The Unfiltered Air Regardless Of The    Effectiveness Of The Filter.Mate Description1. The Nose Pad Is Facing You. Hold The Earloop Strap With Each Hand With The Nose Pads Facing Up.2. Place The Respirator Under The Chin.3. Put The Fingertips Of The Two Hands On The Top Of The Nose Frame And Push Them Inward. At The Same Time, Move The Fingertips To The Sides Of The Nose Frame To Shape The Nose Frame Into The Shape Of The Bridge Of The Nose. Hold The Respirator Nosepiece    And Wear A Less Effective Respirator.It Is Important To Firmly Press The Nose Bridge Against The Bridge Of The Nose To Form A Good Seal.Filter And Valve Replacement TimeThe Effective Working Life Of A Mạsk Filter Depends On Many Factors, Such As: The User's Breathing Rate; The Degree Of Environmental Pollution; The Length Of Time The Filter Is Active; The Level Of Hygiene. It Is Recommended To Consider These Factors    And Replace The Filter Monthly, Whichever Is Earlier.Assuming The Valve Is Properly Maintained, It Should Be Replaced Regularly.On The Valve, It Is Critical To Find Two Pins, Close The Hinges, Insert Them Properly Into The Valve Body, And Check That They Are Properly Seated.
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