... HPLC ColumnDimension: ID 4.6mm(Standard)Length: 150mm, 250mm(Standard)Connection: 1/16” (Standard)Packing Material: world famous brand material, such as Kromasil, Luna, YMC ... ColumnDimension: ID 20mm, 30mm, 50mm(Standard)Length: 250mm, 300mm(Standard)Connection: 1/16” (Standard)Packing Material: world famous brand material, such as Kromasil, Luna, YMC ...