With a clean thinner or water to the paint sprayed to the appropriate viscosity,
measured by coating -4 Viscometer, the appropriate viscosity is generally 18 to 30 seconds.
If there is no Viscometer, visual method can be used:
with a bar(iron bars or sticks) to stir up the paint to 20 cm high to stop the observation, such as paint in a short time(a few seconds) Too thick;