Ceimic Chemistry #129 eascra fir4 ga gu eascra, iol eascraí beaker s en Corraigh leis an tslat ghloine, fág an tslat san eascra agus clúdaigh an t-eascra le gloine uaireadóra. Stir with the glass rod, which should be left in the beaker, and cover the beaker with a watchglass.