Cogent Guard Column Kit with Bidentate C18 Back Catalog number: 40018-HG4 Manufacturer: MicroSolv Technology Corporation Availability: 3 weeks Price on request - + Recommended 79925PU-504 Purospher RP-18, 5um, 4x4mm, 10pk 634,50 € A2001020X020 Polaris 3 C18-A 20 x 2.0mm 532,22 € 760805.30 EC 150/3 NUCLEODUR SPHINX RP, 3 µm 834,45 €