L1 US Pharmacopoeia Columns
MilliporeSigma offers a broad range of HPLC columns that are fully compliant with USP (United States Pharmacopoeia) specifications. L1 USP columns are described as octadecyl silane, chemically linked to porous silica or ceramic micro particles. Our high-quality L1 USP products deliver reliable, reproducible results – time after time. A perfect example is: LiChrospher® RP-18 (5 µm).
LiChrospher® 100 RP-18 HPLC columns are incredibly reliable and highly versatile. These traditionally manufactured spherical silica based supports are designed for reversed-phase chromatography of acidic, neutral and weakly basic compounds – substances frequently found in all analytical fields. The columns’ optimal selectivity and performance ensure that these parameters remain constant from batch to batch and from year to year. Furthermore, the difference in polarities is clearly described by the selectivity pattern. As a result, LiChrospher® 100 RP-18 allows faster, more accurate method development.
Pharmaceutical analysis: Acetyl salicylic acid. Learn More
Pharmaceutical analysis: 2-Oxoacids. Learn More
Pharmaceutical analysis: Corticoids. Learn More
Environmental analysis: Naphthols, chlorophenol and nitro aromatics in water. Learn More
The LiChroCART® columns (75, 125, 150, and 250 mm length) with an i.d of 3 and 4 mm require a manu-CART® NT cartridge column holder, which can be used to hold one cartridge column with or without a 4×4 mm guard column. 250-10 mm LiChroCART® columns require the manu-CART® “10”-II cartridge holder.
Hibar® columns are supplied complete with endfittings. When using a guard column with a Hibar® column, we recommend a guard column cartridge holder for 4×4 mm LiChroCART® guard column cartridges.