Macherey-Nagel SPE Cartridge, CHROMABond column C18 45 ml, 5000 mg, PP, 20/PAK

Silica gel based octadecyl phase, not endcapped. It is a classical and widely used nonpolar material for hydrophobic interactions with a wide variety of organic compounds. For viscous liquids, larger particles have proven useful. Larger particles used for fast flow (f).