Ibhotile ye-Regant luhlobo lweglasi yelebhu esetyenziselwa ukugcina kunye nokusasaza ukwenziwa kweekhemikhali. Reagents are substances that are used in chemical reactions or laboratory analysis to produce a chemical change or to detect, measure, or test other substances. Iibhotile zokuqala zenzelwe ngokukhuselekileyo ziqulathe kwaye zigcine ezi ntlawulo.
Iibhotile zokuphinda zenziwe ngeglasi, nangona iinguqulelo zeplastiki nazo ziyafumaneka kwizicelo ezithile. Iibhotile zokuqala zeglasi zikhethiwe kuba zine-hert nge-camic, intsingiselo ayiphenduli ngeekhemikhali ezininzi kwaye azingcolise i-regents zigcinwe.