13 : fire writing

13 : Fire writing

• weighing balance 

• saturated sodium nitrate(III) about 10g in 10 cc

• Saturated Potassium nitrate  about15g in 10 cc

• splints / matches

• 10 cm3 measuring cylinder 

• eye protection

• 50 cm3 beaker

• stirring rod

• filter paper or school paper towels cut in half

• wooden taper

• small paint brush or wooden splint

• pencil / cotton buds