Under nitrogen atmosphere, slowly add 10 ± 1kg dichloromethane to filters (No.: egl016) and (No.: egl017) through diaphragm pump to make dichloromethane flow down the inner wall of the filter.
Under nitrogen atmosphere, slowly add 10±1kg dichloromethane into filters (No.:EGL016) and (No.:EGL017) by diaphragm pump, so that dichloromethane flows down the inner wall of the filter.