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
The chromatographic column is the most important part of the high-performance liquid chromatograph, and the quality of the column directly affects the analysis and detection of the target compound.