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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:

  • Moderate retention, avoiding extremely strong adsorption of some compounds

  • 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:​

  • Determination of drugs and their metabolites in biological fluids, such as barbiturates

  • Determination of drugs of abuse such as THC

◆ Ordering Information

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