Can detect floating hydrocarbons by a specialised membrane that dissolves in the
presence of a pollutant, and triggers an alarm which can be transmitted by electric
cable, radio or telephone link. The detector is specially designed for floating
hydrocarbons and chloride solvents. The spill only has to be 0.1 millimetres thick to
be detected. The system is simple to use, allowing for water level change, and does
not need recalibration.