... reverse osmosis (RO), nano-filtration (NF) and ultra-filtration (UF) system.3>. It is compatible with all of the leading RO ... , SrSO4, BaSO4, CaF2, SiO2, Fe2O3, etc.2.Make the system don't scale even if the CaCO3 LSI up to +2.5 ... :Generally, the dosage is 2 – 6 mg/L in RO system.Our technician can help you to calculate the exact dose ...