Macherey-Nagel HPLC Column EC 250/4 NUCLEODUR 300-5 C4 250 mm, ID: 4 mm pack of 1

Wide pore RP phase for daily routine analysis. The medium density butyl modification is based on high purity NUCLEODUR silica gel and is often used for the separation of biomolecules. Butyl (C4) modifications have a lower retention for hydrophobic compounds compared to C18 (octadecyl silane, ODS) or C8 (octyl, MOS) modifications.