Labocosmetica PRELUDIO ACIDIC - Presoak for Rinseless and Waterless System 1 LiterPreludio Acidics emollient acid formula penetrates limescale deposits and mineral films, dissolving them and lifting them from the surface more quickly and effectively than a neutral or alkaline product. Heavy Dirt: Mix 1 part solution with 5 parts water Moderate Dirt: Mix 1 part solution with 10 parts water Preludio Acidic works as a powerful acid presoak, gently dissolving and sequestering limestone and mineral deposits and other contamination. It