Chloride electrode cleaning compound

2,2',4,4'-Tetrabromo-5-methoxydiphenyl ether, 1.2ml x 50ug/ml, nonane

5-Chloro-2-(2,4-dichlorophenoxy)phenol , 1.2ml x 50ug/ml, methanol

Ethirimol, 10 µg/ml, Acetonitrile, 10ml