Preparation of the 2,6-Dichlorphenolindophenol solution (0,001 mol/L) 163,1 mg 2,6-Dichlorphenolindophenol are weighed into a 400 mL beaker and filled up to 250 mL with distilled water. This solution is than stirred for 20 minutes at 50°C. After this it is filltrated into a 500 mL volumetric flask. For stabilisation 50 mg potassium hydrogen carbonate may be added. After that the flask is filled up with distilled water. ChemTron Titroline 6000自動電位滴定儀 優(yōu)萊博 TitroLine 7500KF容量法卡式水份滴定儀 優(yōu)萊博 TitroLine 6000自動電位滴定儀