IR-261 Alkali Detergent for RO Membrane


IR-261 is a liquid alkali formula. It can remove oil, organic substances, and bio-mucosa.

The pretreatment of the original water quality determines the operation stability of the RO system. For any RO system, after three to twelve months, it should be polluted. Thus chemical cleaning is required. IR-261 is an alkali detergent that removes oil, organic substances, and bio-mucosa.

IR-261 has the following properties.

  1. Suitable for all aromatic polyamide and acetate acid membranes.
  2. Effectively remove oil, organic substances, and bio-mucosa from the membrane surface.
  3. The temperature increases, and the effect will be better.
  4. Diluent pH 10.5±0.5.
  5. Liquid chemicals, mix well.
  6. It can be used repeatedly.


Dilute to 1-3% (1:45).


Item11 times concentrate
AppearanceAmber liquid
pH Value (1% water solution)10.0-11.0
Density (20℃), g/cm31.10±0.05
Storage temperatureNot lower than -5℃


  1. Check the water box, pipeline, and filter, and change the filter material if needed.
  2. Input q.v. RO effluence to the water box.
  3. Input q.v. IR-260 to water box, mix the solution with the water pump and measure pH.
  4. Clean the system repeatedly, measuring pH 5~20 minutes. After pH rise to 4, input q.v. IR-260 or acid, till pH does not rise, meaning cleaning is ended.
  5. If pollution is serious, sometimes the first batch of detergent should be evacuated and the next batch should be required.
  6. Pay attention to the solution temperature, don’t exceed the required temperature.


25kg per barrel.

25kg plastic barrel

Safety and Protection:

Alkaline, avoid contact with eyes and skin. Once contacted, flush with water.


Contact us if you want to get the latest IR-261 price and download IR-261 SDS/MSDS.