For installations where regeneration systems are not appropriate, replaceable portable exchange deionisers (PEDI) are an great solution. Suitable for a wide range of flow rates (up to 500 L/hr), Culligan PEDI systems reduce both positively and negatively charged ions from water by means of ion exchange resins. When your PEDI tanks are exhausted, a Culligan service technician can replace your ion exchange tanks at your convenience. This type of system can reduce capital costs as well as handling of regenerate chemicals such as caustic and acids.