Used in: autoclaves, hand-pieces, laboratory testing, laser cutting, and automotive. Purification removes contaminants that may interfere with processes, or leave residues on evaporation. The pharmaceutical industry. Water of this grade is widely used as a raw material, ingredient, and solvent in the processing, formulation, and manufacture of pharmaceutical products, active pharmaceutical ingredients (APIs) and intermediates, compendial articles, and analytical reagents. The commercial beverage industry as the primary ingredient of any given trademarked bottling formula, in order to maintain critical consistency of taste, clarity, and color. In lead-acid batteries to prevent erosion of the cells.