Rain Tester simulates that rain horizontally impacts fabric samples mounted vertically in a stainless steel bath. Samples are backed with a standardised blotting paper which is weighed before and after each test. The rain is formed by a column of water which can be adjusted from 600mm (24in) to 2400mm (96 inches) depending on model in 300mm (12 inches) increments, applied via a standardized nozzle