900 mg MgSO4, 150 mg PSA

SelectCore QuEChERS dispersive SPE kits contain pre-weighed PSA/C18/GCB sorbent blends that help to remove matrix interferences from samples.
• MgSO4 removes residual water and improves analyte partitioning.
• PSA removes sugars, fatty acids, organic acids, lipids and polar pigments.
• C18 removes long-chain fatty compounds, sterols, and other nonpolar interferences.
• GCB removes pigments, polyphenols, and other polar compounds.
After clean-up, the sample mixture is centrifuged, and the supernatant can be analyzed directly or undergo minor additional treatment before analysis.