Home :: HPLC Columns :: VDS optilab :: VDSpher PUR Series :: VDSpher PUR 100 Series :: VDSpher PUR 100 C18-SE Series (monomeric bonding, gas phase endcapping) :: VDSpher PUR 100 C18-SE - 3.5µm :: VDSpher PUR 100 C18-SE 3.5µm, Guard Cartridges 2.0 x 20mm, pk.5