Potassium Dichromate Paper is a chemically treated indicator paper commonly used in laboratories for qualitative chemical testing and detection of certain gases and vapors. The paper is impregnated with potassium dichromate solution, which reacts with specific substances and produces a noticeable color change, making it useful for analytical and experimental purposes.This test paper is widely used in chemical laboratories, environmental testing, educational institutions, and research laboratories for demonstration experiments and chemical analysis. The paper provides a quick and convenient method for detecting chemical reactions without the need for complex instruments.