... corrosion and scale inhibition effect on the high hardness cooling water (for example, H = 1000ppm, CaCO3 dollars), appli Air ... corrosion and scale inhibition effect on the high hardness cooling water (for example, H = 1000ppm, CaCO3 dollars), applicable ... steel, etc., widely used in the air-conditioning cooling water in hotels, restaurants, etc..Quality IndexAppearance: light yellow transparent ...