InertSustain AQ-C18 1.9µm, 150x2.1mm PEEK Back Catalog number: 5020-87070 Availability: In the manufacturer's stock Price on request - + Recommended 79138 HxSil C18 Cartridges (2/pk* Price on request 763434.40 EC 100/4 NUCLEOSHELL BB RP 18, 2.7 µm 778,20 € 760656.30 EC 100/3 NUCLEODUR C8Gravity, 3 µm 740,13 €