VarioPrep HPLC guard column cartridge VP 10/8 NUCLEODUR – polar universal guard column cartridge – length: 10 mm, ID: 8 mm pack of 2 – compatible with VarioPrep HPLC column with ID: 8 mm or ID: 10 mm – for all polar NUCLEODUR- and NUCLEOSIL phases – requires VP guard column holder 8 mm (p/n 718251)