+3 Methyl Ethyl Ketone Peroxide (MEKP) - Clear 081025 $1.59 In stock Quantity: 1 Add to Bag Product Details MEKP Catalyst is an excellent liquid polymerization initiator for the room temperature cure of unsaturated polyester and vinyl ester resins. 2oz per gall of resin and 4oz per gallon of gelcoat. Save this product for later Favorite