How much MEKP is typically required to initiate a quart of resin at 2%?

Initiating the curing process of polyester resin with methyl ethyl ketone peroxide (MEKP) involves mixing a specific percentage of MEKP into the resin. For a standard 2% catalyst ratio, the calculation is based on the total volume of the resin being used.

When you have one quart of resin, which is approximately 946 milliliters, calculating 2% of this volume requires multiplying 946 ml by 0.02. This results in approximately 18.92 ml of MEKP, which is commonly rounded to 20 ml for practical application.

Thus, when preparing resin for projects, using about 20 ml of MEKP allows for effective curing. This is why the correct answer reflects this well-established ratio in composite material processing. The other options either under or overshoot this figure based on the standard 2% catalyst ratio.