| abstract |
The present invention discloses a thin reagent containing film sensor for detecting and measuring free chlorine in water, where components of the film sensor are a polymeric substrate that contains reactive material, an organic polyhydroxy compound, a reagent that creates an associated polymeric matrix, and an indicator; and a method for making the same. The film sensor can be formed to fit a specific dimension or shape. The film sensor swells or dissolves when exposed to aqueous solutions so that said reagent is released so that it can react with free chlorine, or the film sensor swells when exposed to aqueous solutions so that the aqueous solution diffuses into the film sensor and reacts with said reagent contained within the swollen film sensor. |