Laboratory filler metal triangle spiral filler metal wire triangle filler nuclear industry filler Fanske filler is mainly packed in the smaller diameter of the tower, because the size of these packing particles is small, the specific surface area is large. During the operation of the column, the method of pre-flooding can be used to wet the packing surface to improve the separation efficiency of the column. Previously, the small particle packed column is not only used in laboratory separation research, has been applied to the purification and separation process of fine chemical products. The packed column with small particles has become an important means for the separation of small batch and high purity products. Laboratory filler metal triangle screw filler wire packing industry packing Finn, out by the former Soviet union, the packing each lap was positively triangle, is to use wire winding and become, is winding each circle is not round but triangle, circle between each about 60 degrees, from transverse direction is a cross-sectional is six star polygon and filler particles.