Traffic Experiment Video : Requirements : Indigo carmine dye , NaOH pellets , Water , Glucose Procedure : take 100 ml distilled water in conical flask and add small amount (20 mg) of indigo carmine dye and mix it well. Take another conical flask and take 150 ml water. 3 gm glucose and 5 gm NaOH mix in this flask and mix it well.then pour this solution into Indigo carmine solution so it becomes green in colour. then wait about few minute.