Our pre-mixed Basic Yellow 40 contains no harmful solvents, gives off no irritating fumes and is non-flammable. It can be used after cyanoacrylate fuming on surfaces such as cans, leather and plastics. It fluoresces well between 365nm and 485nm. The pre-mixed solution has an average shelf-life of 6 months, which may be extended by refridgerating the solution.