Temperatuuri mõõdetakse katseklaasis (1) termomeetriga (4), kusjuures termomeetri alumine ots peab olema umbes 1 cm katseklaasi põhjast kõrgemal ega tohi puutuda vastu katseklaasi seina.
Traces of manganese dioxide have a catalyzing effect on the reaction, ensure that pipettes and test tubes are used which have been scrupulously cleaned and reserved exclusively for the purpose.
