Narration : 8. Direct Heating
- Gently heat a casserole containing a solution with a small flame and slowly move it in a consistent circular motion.
- When the liquid begins to boil, move the casserole away from the flame. Then, keep gently boiling by occasional heating.
- The bench might get burned when a casserole is put on immediately after heating.
- A hot casserole might crack when put on a wet surface.
- Put it on a heat-resistant board or on a dry bench after short cooling.
- When a beaker is heated using a tripod and wire gauze with ceramic, light and adjust the gas burner first.
- Then, place the burner below the tripod and put the beaker on the wire gauze.