MEKP Catalyst Ratios Peroxide 1 qt 1 gal 5 gal Concentration Resin Resin Resin 1.0% 10 cc 38 cc 188 cc 0.4 oz 1.5 oz 7 oz .4 1.25% 12 cc 47 cc 235 cc 0.5 oz 1.8 oz 9.2 oz 1.5% 14 cc 56 cc 282 cc 0.6 oz 2.2 oz 11 oz 2.0% 19 cc 75 cc 376 cc 0.7 oz 2.9 oz 14.7 oz cc=cubic centimeter oz=ounces (weight not volume) These calculations are based on 9.2 pounds per gallon resin and 1.11 grams per cubic centimeter MEKP