B&M NH2 (amino) ni inkingi yo gukuramo aminopropyl hamwe na silika gel. Ifite intege nke za polar ihagaze hamwe noguhindura anion, binyuze muburyo bwo guhanahana anion (igisubizo cyamazi) cyangwa polarite adsorption (non-polar organic organic solution) kugirango igere ku ngaruka, kubwibyo ifite uruhare runini. Iyo kwitegura hamwe nibisubizo bidafite inkingi, nka n-hexane, birashobora gukora hydrogène ihuza na molekile hamwe na -oh, -nh cyangwa -sh, na amino PKa = 9.8; Ingaruka ya anion iba ifite intege nke kurenza SAX, no muri PH < 7.8 igisubizo cyamazi, irashobora gukoreshwa nkumukozi wintege nke wa anion, ushobora gukoreshwa mugukuraho anion zikomeye nka acide sulfonique murugero.

Inkunga ya aminopropyl ni polar adsorbent cyane mubisubizo bidafite ingufu kandi ifite imbaraga zo kugumana anion-guhana mugisubizo cyamazi.NH2 ikora neza muburyo butandukanye bwicyitegererezo kandi irashobora gukoreshwa mubiribwa, ibidukikije, imiti nubuvuzi.

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