Mbale za 11mm pamwamba pamiyendo nthawi zambiri zimawonongeka kukhala otsika a boron ndi chromium, koma kusiyana ndikuti zomwe zili mu boric acid ndi zinthu zakuthupi ndi mankhwala agalasi ndi osiyananso. Airiren amapereka 11m crimp pamwamba mphete za chromatography mu galasi la acid acid.