Specific surface: refers to the surface area per gram of silica gel, including the sum of the internal micropore surface area and the external surface area

计量单位目粒度是指原料颗粒的尺寸, 一般以颗粒的最大长度来表示。网目是表示标准筛的筛孔尺寸的大小。在泰勒标准筛中,所谓网目就是2.54厘米(1英寸)长度中的筛孔数目,并简称为目

Silica gel is a kind of highly active adsorption material. The main component is silicon dioxide (SiO2), which is an amorphous substance and its chemical formula is mSiO2