If your employee's wear a respirator, they must first have a medical evaluation as specified in OSHA’s Respiratory Protection standard 29 CFR 1910.134.  Please choose a quantity that represents the total number of your employee's that wear a respirator. We will contact you on how to proceed after your order comes through.For more information about OSHA standards and dental mercury, please read our article OSHA’s Respiratory Protection Standard & Dental Mercury.