Water based detector for gasses. Meets the requirements of EN 14291 and DVGW (Deutsche Vereinigung des Gas- und Wasserfaches) registration number NG-5170AS0069. CRC ECO Leak Finder detects gas leaks in pressurized pipe work and pressurized systems. At the location of a gas leak, it forms highly visible bubbles. Biodegradable according to OECD 301B: 31%.