L20 US Pharmacopoeia Columns

Merck offers a broad range of HPLC columns that are fully compliant with USP (United States Pharmacopoeia) specifications. L20 USP columns are described as dihydroxypropane groups chemically bonded to porous silica particles, 3 to 10 µm in diameter. One of our high-quality HPLC columns that meets L20 USP requirements is: LiChrosorb® DIOL (5 µm).

The Versatile Diol-Modified Sorbent

LiChrosorb® DIOL (5 µm) is a highly reliable sorbent made of porous, irregularly shaped silica with a diol derivative of medium polarity. It possesses both polar and hydrophobic properties, making it suitable for polar or weakly hydrophobic interactions in normal-phase or reversed-phase HPLC. This versatile sorbent is also suitable for exclusion chromatography.

Features and Benefits

• Classified as L20 USP column
• Totally porous irregular particles for reliable results
• Ideal for polar or weakly hydrophobic interactions
• Normal-phase or reversed-phase HPLC
• Suitable for exclusion chromatography