ISampuli yeSeli yeVial eveliswe ngu-Aijiren yenziwe ngeglasi ephezulu ye-borosilicate hydrochloric acid, engakwazi ukutshintsha imilo kwiqondo lokushisa eliphezulu, kwaye i-inert kwaye ayisebenzi ngamachiza kunye ne-reagents. I-Black PP Screw Cap nayo yenziwe ngezinto ezichasene nobushushu obuphezulu, kwaye inomsebenzi wokutywina, onokuqinisekisa ngokufanelekileyo ukuba i-reagent ayiyi kuchitha.