Important safety and accuracy notice These are approximate planning estimates, not a guaranteed bill of materials. Actual consumption varies with product, application technique, surface shape, overlap, temperature and wastage. Resin rates are reference estimates, not verified specifications for Willy's products. The MEKP figure is a generic 1–2% by-weight planning range converted approximately to mL. It is NOT a mixing instruction. Always follow the exact resin and catalyst manufacturer's label or technical data sheet. Never choose a catalyst ratio from this calculator alone.