Agilent HF Mega BE-SI cartridge, 2 g, 12 mL, 10 cartridges (Part # 14256018)
Native silica is generally regarded as the most polar SPE sorbent available. Bond Elut SI is particularly effective at separating compounds with a very similar structure. Applying the analytes in a non-polar solvent, then increasing the solvent polarity by increasing the concentration of a polar modifier, such as THF or ethyl acetate, delivers effective separations. Agilent Technologies Silica Gel Sorbent 2 g Tube 12 ml Bond Elut