Since 1980, ZOK has formulated and manufactured gas turbine compressor cleaning fluids for customers worldwide. Through ongoing research and development, the company continues to manufacture and distribute water-based, biodegradable, environmentally responsible cleaning fluids designed for gas turbine compressors. Supported by a global distribution network, ZOK products are used across a wide range of industries where clean and efficient gas turbine operation is essential. The company also provides technical product support to help customers achieve effective compressor cleaning.

Among the ZOK product range is ZOK 27, a water-based, biodegradable gas turbine compressor and gas path cleaner developed in collaboration with the United Kingdom Ministry of Defence for use with Search & Rescue helicopters. Its formulation includes a corrosion inhibitor package that allows a washed and protected engine to be started on demand without requiring a demineralised water rinse before use. ZOK 27 is approved and used by major gas turbine original equipment manufacturers (OEMs) and leading global operators, and is available in both concentrate and ready-to-use formulations.