Experiments Universal indicator ‘rainbow’

 Indictor rainbow         HazCard : 47A-91-32-40A

•  Glass test tube / boiling tube

•  Bungs rubber to fit the glass tube

•  Beaker (100 cm3) Dropper pipettes, 3

•  Clamp stand, boss and clamp

•  Distilled or deionised water

•  Hydrochloric acid, 0.1 mol dm-3 (Low hazard at this concentration) 

• Sodium hydroxide solution, 0.1 mol dm-3 (Irritant)

• Sodium Hydrogen carbonate 0.1 mol dm-3

• Universal indicator solution (Highly flammable)