This is the most frequently question asked and rightfully so!! Unfortunately there's no standard calculation when mixing pigments due to the numerous applications, and mediums that our pigments can be used with. I.E. Automotive, Epoxy, Resin, Slime, Candles, Soaps, Fishing Lures, Woodworking, Pen Blanks, Acrylic, Varnish, Clay, Grout, Flooring, Countertops, Cosmetics, Fingernail Polish, etc. the list goes on.
Other factors are based on the customer. What is the desired look that you're trying to achieve, opaque or transparency?
If you're spraying this pigment, I.E. Automotive, Peelable Paint, etc. the color of the base will greatly effect the final color of the Ghost Pigment.
Our standard for epoxy resin or automotive has been (1) container of our 50 gram pigment powder for every gallon. But, we have seen customers use MUCH less!!
Starting out with 1g of pigment per 8 oz would be a safe start while adding more pigment as needed to achieve your desired outcome.