Diol Tip SPE Pipette TipsExtraction Tips

B&M® Diol is a silica gel based tip SPE with silica gel-like release properties. It extracts polar samples from non-polar solutions through polar interaction, is similar to unbound silica gel in the nature of hydrogen bond interaction with the sample, and can differentiate structurally similar compounds such as structural isomers, as well as silica gel minicolumns. It can also be used to isolate nonpolar compounds because the carbon chains in the bound phase provide sufficient nonpolar force to hold hydrophobic samples, with solvent ratio selectivity different from silica gel.  Diol is commonly used to isolate drugs or metabolites, such as THC, from biological solutions, such as urine samples. It is equivalent to Agilent Bond Elut 2OH and Waters Sep-Pak Diol.