The tubing from the water sampler’s pump tubing intake to the water source should be as short as possible to aid the downhill routing of the fluid. The tubing should not be allowed to coil.
To estimate how much tubing is needed between the water sampler and the water source, use the rise (vertical distance) and run (horizontal distance) to calculate the slope length (length of tubing required).
Note: A minimum of 25 feet in tubing length is recommended for a vacuum pump sampler.