The tubing is commonly used alongside Waterra inertial tubing, utilising foot-valves. The flexible clear tubing is used to extend the well sample tubing. It is useful in wells where the groundwater level is close to the bottom of the well and it gives flexibility at the well head when taking the sample. The tubing is flexible enough to bend back on itself allowing the extension to be pushed back down the casing for use during the next sampling event. Sold per 1m length