Potassium iodate starch paper • Quick and easy determination of sulphit and sulphur dioxide • The test paper allows the rapid detection of sulphit and sulphur dioxide. • The paper is used in food analyzing laboratories. • The reaction is as follows: 2 IO3– + 5 SO32– + 2 H+ → 5 SO42– + I2 + H2O • Sulphurous acid or sulphites reduce potassium iodate to free iodine. • With starch, iodine gives a characteristic blue-black color. • For a detection of sulphite with high sensitivity we recommend Sulfit Test paper . Product data • Presentation: Reel of 5 m length and 7 mm width • Color reaction: white → blue-black • Limit of sensitivity: 5 mg/l SO2 • Minimum purchase: 5 reels