The Spray Test is a simple method to
determine the resistance of any fabric, which
may or may not have been given a waterresistant
or water-repellent finish, to surface
wetting by water. It is not intended to predict
waterproofness, since it does not measure the
penetration of water through fabric.
A specified volume of distilled water is sprayed
centrally onto an inclined test specimen.
Stringent quality control of the nozzle hole
pattern, combined with accurate height setting
above the specimen, ensure a consistent spray
flow and formation, critical to the requirements
of the International standards.
The spray rating is determined by comparing
the appearance of the tested specimen with
descriptive standards and photographs. The
AATCC Spray Test Rating Chart is available for