Fully-Automated, LC-Integrated Sample Preparation of Untreated Bio-Fluids |
LiChrospher® ADS is designed for on-line, LC-integrated sample preparation of hydrophobic, low molecular weight analytes from untreated biological samples such as hemolyzed blood, plasma, serum, milk, salivary fluid, fermentation broth, supernatants of cell cultures and tissue, as well as food homogenates. This fully-automated system enables direct extraction and enrichment prior to analyte separation via high performance liquid chromatography (HPLC). Hence, untreated bio-fluids can be directly injected without negative effects on either the column or results. Compared to conventional off-line sample preparation, LiChrospher® ADS offers a less expensive, less time consuming and more precise solution.
LiChrospher® ADS sorbents belong to the family of restricted access materials (RAM) with two chemically different surfaces. Extraction and fractionation with LiChrospher® ADS is based on the simultaneous performance of two chromatographic processes: reversed phase/ion-pair chromatography and size exclusion chromatography.
Sorbent characteristics |
Spherical silica gel particles with two chemically different surface modifications |
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Surface modifications |
1. Exterior surface Diol modification 2. Interior surface (surface of pores) C-4, C-8, or C-18 modification |
ADS |
Alkyl-Diol-Silica |
Particle size |
25 μm |
Pore diameter |
60 Å (6 nm) |
Stability | pH 2-7.5 |
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