combine Part A, except approximately 25% of water, and heat to 75'C with moderate stirring. Combine Part B, heat to 75'C, and add to Part A with agitation. Rinse vessel with about half of water held back. Combine Part C, warm to 40'C and add to Parts A/B mix at 45'C. Rinse vessel with remaining water. Stir down to room temperature. Important: Titrate and adjust to 0.1 to 0.2% free fatty acid as KOH. For packaging charge 97% of concentrate with 3% of isobutane/propane (87:13 ratio).