The Sirchie Search Iodine Print Enhancers consists of six crushable glass ampoules filled with reagent (1.0 mL). The ampoules are housed in plastic applicator tubes. Crush the ampoule, remove the applicator tube cap and apply the reagent to the iodine developed print. These print enhancers offer an unlimited storage life and are completely disposable. Enhancers contain benzoflavone. They are clean, convenient and easy-to-use.