Starch Iodide Paper is a ready-to-use chemical indicator paper used for the qualitative detection of oxidizing agents, particularly chlorine, ozone, and other oxidizing substances. The paper is specially treated with starch and potassium iodide solution, which reacts with oxidizing agents to produce a characteristic blue or blue-black coloration due to the formation of iodine–starch complex.Manufactured by Indica, these papers are supplied in a convenient pack of 100 leaves and are widely used in chemical laboratories, environmental testing, water treatment plants, and educational institutions.