... Detailed Product Description NH4-stabilizer colloidal silica (silicon dioxide,silica sol)Particle size 8-20(nm),low impurity, high diaphaneity, etc. ... NH4-stabilizer colloidal silica (silicon dioxide,silica sol)There are five ... 10Particle size (nm)8-20StabilityTwo years Packing & StorageColloidal silica is packed in 25kg,250kg or 1000kg plastic drums. ...