1.High-effective chelating agent 2.no metal ions 3.Effect to any PH ... contains hign-effective chelating agent,has no metal ions,and is dissolved in water.It has strong chelate effect for ... particles,organic matter,metal ions and other pollutants.It has the characteristics of low viscosity,high effiency,environmental ... 2.Temperature:3 °C ~50 °C 3.Stack:no more than 4 levels4.Period of validity:1 years, ...