為實驗者效勞
Indigo carmine C.I. 73015
CAS：860-22-0
Iodine, solution 0,05 mol/l (0,1 N)
CAS : 7553-56-2
Potassium permanganate
CAS：7722-64-7
Diethylamine CAS: 109-89-7
Silver nitrate
CAS: 7761-88-8
