... corrosion and scale inhibition effect on the high hardness cooling water (for example, H = 1000ppm, CaCO3 dollars), appli ... steel, etc., widely used in the air-conditioning cooling water in hotels, restaurants, etc..Quality IndexAppearance: light yellow ... 15Organic phosphorus content%: ≥ 12PH value: 1.0 ~ 2.0UseDue to the different water quality, generally doses of 10-20ppm.PackagingNet weight ...