Izitsha zengilazi zokugcina ezenziwe ngohlobo 1, uhlobo A, ingilazi ye-borosilicate enwetshiwe engu-33 noma ingilazi ye-amber engu-51A, enamandla ukusuka ku-20mL kuya ku-60mL, inikeza inani le-pH eliqhubekayo ukuze kugcinwe impilo yesampula, ama-caps amakhemikhali angenayo afaneleka enkulu.