st520l defoamer introduction:  SummarizeST520L is some milky white liquid additive and can be used in conjunction with other additives like ST800L. ST520L can inhibit and eliminate bubbles effectively during the process of slurry preparation  and has been widely utilized in oil field.Technical features  Its content is generally under 0.20% (accounting for mixed water);It is good at defoaming and antifoaming ;It has no adverse effects on slurry’s other properties.Specifications               ST520L  Physical properties           Item       Physical properties           Image       Milky white liquid    Density,g/cm3(20°C)         0.90±0.05