Single Use Disposable Medical PVC Adjustable Venturi Mask

Features:

- Provide various choices to suit different requirements, 24%(Blue), 28%(Yellow), 31%(White), 35%(Green), 40%(Pink), 50%(Orange), 60%(RED)

- Single venturi valve is available with fixed concentration

- The standard length of tube is 2.1m, and different length is available 

- Available with CE, ISO certificates.