How much powder or pigment is needed per gallon of epoxy mixture?
There is no specific answer. The amount of pigment solely depends on the outcome that the user wants. It depends on the shade of the color that the user wants to achieve. We recommend adding the pigment in small amounts. You can start with 3 to 4.5 ounces of pigment per gallon of the epoxy mixture and add gradually while mixing. Normally, castings will need less pigment whereas coatings will need more pigment. Epoxy with a 2:1 mix ratio needs less pigment while those with a 1:1 mix ratio need more.