"A length of reinforced colour-coded flexible tubing produced according to ISO5359 and intended to conduct compressed carbon dioxide (CO2) from a CO2 terminal unit or CO2 cylinder to a medical device that functions with CO2 (e.g., ventilator, insufflation system). The gas pressure in the tubing will be low, a ""working pressure"" (e.g., 3 - 5 bar), having been reduced by a regulator from a high pressure. The tubing is reinforced with, e.g., woven polyester or cotton, and intended for use within a static clinical environment (e.g., intensive care). It is available in various lengths, including standard coil lengths. This is a reusable device."