Turco, a subsidiary of Elf Atochem, has developed a water-based compressor cleaner with new surfactant technology. Most traditional cleaners have been designed for off-line cleaning and are not suitable for high- temperatures and airspeeds. But, by withstanding the high compressor temperatures, the on-line cleaning or running wash has the ability to keep the performance near to 100 per cent for a prolonged period, making off-line intervals less frequent. Previously, water-based on-line cleaners have not been very effective due to re-deposition of dirt on the last compressor stages.