Phenomenon
Heavy pigments is settled at the bottom of container.
(If the paint is stirred and mixing well, it is fine.)
Cause
A. Storing for long time or at high temperatures.
B. Big amount of pigments.
C. Low viscosity of paint.
Repair
Stir the paint before using and discard the hardened one.
Prevention
A. Store indoors at 20℃ or less within the shelf life.(1 year)
B. Turn the container upside down regularly during long storage.