Potassium iodide starch paper from MN • Quick and easy determination of nitrite and free chlorine • This test paper allows the quick and easy detection of strong oxidizers such as nitrite and free chlorine. • Potassium iodide starch paper is also used to control diazotization reactions. • Nitrite or free chlorine oxidize potassium iodide to form elemental iodine which reacts with starch to a blue-violet complex. • Potassium iodide starch paper may be used by dipping it into the sample or by applying drops of the sample onto the paper. • To detect gaseous oxidizers, the paper is moistened with distilled water and then exposed to the gas in question. • The 816 N version comes in a classic test paper reel. • You can choose the required test paper length simply by tearing the paper. • Thus, MN 816 N is especially suited to be dipped into solutions. Technical data • Colour reaction: white → blue-violet • Limit of sensitivity: 1 mg/l NO2– / 1 mg/l free Cl2 • Presentation: Reel of 5 m (16' 5") length und 7 mm (0.3 in) width • Minimum purchase: 5 reels