SPE cartridges, CHROMAFIX®, Alox N (M), 50 unit(s)SPE cartridges, CHROMAFIX, Alox N (M) Material: PP columns with PE filter elements. Further attractive products to complete your chromatography laboratory can be found on our Chromatographypage! CHROMAFIX cartridges offer an alternative way of handling using positive pressure by syringes or peristaltic pumps.. Especially suited for convenient solid phase extraction of small sample volumes. Female Luer fitting at the inlet, male Luer tip as exit.