Adjustable Venturi Mask

Made of Medical grade PVC
Adjustable nose cilp
Oxygen concentration is blue 24%,yellow 28%,
white 31%,green 35%,pink 40%,orange 50%.
With elastic strap
With 2m tubing
Size available:S,M,L,L,L+,XL
packed in individual pe packing
50pcs/ctn oc 100pcs/ctn
Table of Correspongent Oxygen Concentration
for Different Oxygen Flow