Physics for IGCSE & O level - The Earth In Space (Section 1 - No. 32)
What is the safest way to warm a beaker of water?
Set it directly over the burner.
Place the beaker on a gauze on a tripod.
Hold the beaker with your hands.
Pour the water directly into the flame.
Forklaring
Using a gauze on a tripod is the safest way.