C8/SAX SPE Cartridge
Extracting acidic drugs in biological fluids
Finetech® C8/SAX is composed of silica gel bonded with octyl and quaternary ammonium groups at a specific ratio. It’s a mixed-mode sorbent with two retention mechanisms: octyl groups provide moderately hydrophobic interactions, quaternary ammonium groups provide strong anion exchange
C8/SAX will be a better choice if very strong adsorption in C18, C8 or SAX packing results in difficult elution of some analytes.
◆ Features:
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Moderate retention, avoiding extremely strong adsorption of some compounds
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Ideal for complicated samples such as blood and urine
◆ Specifications:
Surface area: 480 m²/g
Particle size: 40-75 μm
Pore size: 70 Å
◆ Applications:
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Determination of drugs and their metabolites in biological fluids, such as barbiturates
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Determination of drugs of abuse such as THC