Liquid Scale Dissolver line-up is the industry's most trusted solution for descaling and cleaning cooling tower. It provides unmatched features such as a built-in pH color indicator, superior low foam characteristics in a fast-action cleaner. The built-in pH color indicator is a good guide to the proper application of the product. It gives the water a green or light blue color with the product at the desired strength and causes the water to turn dark blue or purple when the product is neutralized thus, no scale is being dissolved at this time. When this occurs add more product to change the water back to a light blue or green. Low foaming corrosion inhibitor provides protection of system metal during descaling. The low foam characteristics provide safety to the technician.