J&K Scientific's C18 sorbent is composed of endcapped silica gel particles, which reduces interference from basic and polar compounds. Applications include: - Analysis of drugs, poisons, pollutants, and their metabolites in biological matrices - Separation of biomolecules such as lipids, antibiotics, bile acids, and saccharides - Determination of mycotoxins such as fumonisins in foods - Determination of preservation sin cosmetics and skin care products