Product Short Description: Fluorescein Liquid Dye Rx is a water-based fluorescent tracer dye that meets the minimum biodegradation requirements. Product Description: Fluorescein Liquid Dye Rx is a water-based fluorescent tracer dye that meets the minimum biodegradation requirements, removing the need for a substitution warning unlike the standard fluorescein leak tracing dyes. Fluorescein Liquid Dye Rx provides a fluorescent colour which is visible to the naked eye and can be detected subsea by cameras, fluorimeters calibrated to the appropriate excitation / detection wavelength . Fluorescein Liquid Dye Rx is lower in toxicity towards operatives and marine organisms than other leak testing dyes, such as Rhodamine and is non-hazardous for supply and transportation.It is compatible with Rxsol Hydrotech 367 Rx corrosion inhibitors and oxygen scavengers.