Aluma-Bright Foam can be used at 65°F to 180°F at concentrations of 1% to 10% by volume with water. Foam, immerse, wipe, scrub, or spray on metal then rinse thoroughly with water. Contact time will vary with soil loading and application. For optimum results when working with large surfaces, clean from the bottom-to-top to minimize streaking effects, then water rinse from the top of the part and work towards the bottom. Using a dedicated slow flood rinse motion with ambient to cool clean water, an operator can determine that soils and any acidic residual chemical residue are neutralized and rinsed away when a smooth water break free surface film is observed during rinsing.