Adult oxygen mask EM01-50 series

adjustable concentrationVenturitransparent

Applicable to COPD (chronic obstructive pulmonary disease/senile chronic bronchitis) patients, control the inhaled oxygen concentration, reduce the dependence of COPD patients on higher oxygen concentration, and help patients to remove oxygen the Oxygen concentration regulator (Rotation to adjust oxygen concentration) Blue-green adjustable concentration: 35%, 40%, 50% White-green adjustable concentration: 24%, 26%, 28%, 30% Adult mask with oxygen tube, 24%,26%,28%,30% venturi barrel Adult mask with oxygen tube, 24%,26%,28%,30%,35%,40%,50% venturi barrel