Yes, TotalBoat TotalProtect Epoxy Barrier Coat Primer can be measured by weight. The mix ratios are listed below.

Gray: 5.61:1, which is 5.61 parts base to 1 part curing agent, or 85.01% base to 14.99% curing agent.
White: 6.01:1, which is 6.01 parts base to 1 part curing agent, or 85.74% base to 14.26% curing agent.