2 6 dichlorophenolindophenol dcpip July 8, 2019 16 32 64 128 2 6 dichlorophenolindophenol dcpip test Vitamin c 2 6 dichlorophenolindophenol dcpip test 2 6-dichlorophenolindophenol 2 6-dichlorophenolindophenol sigma 2 6-dichlorphenol 2 6-dichlorophenol-indophenol sodium salt dihydrate