Iibhotile zeglasi ezisabelayo ziibhotile zeglasi ezisetyenziselwa ukugcina izinto ezisebenza ngemichiza. Ezi bhotile zihlala zenziwe ngeglasi enganyangekiyo yeasidi kunye nealkali, enokugcina ngokukhuselekileyo imichiza eyahlukeneyo enje ngeeasidi, iziseko, izisombululo kunye nezinyibilikisi.