Reverse Osmosis Membrane

Osmosis is a process of movement of solvents through a semi-permeable membrane from a region of lower solute concentration to higher solute concentration. On the contrary, diffusion does not require a semi-permeable membrane to occur and the molecules move from a region of higher concentration to lower concentration. Reverse osmosis as used in water treatment systems is a purification process through which water molecules pass through a porous membrane while leaving other molecules, presumably of contaminants, behind.


Product lines for Reverse Osmosis Membrane

Alkaline and acid cleaning for Membrane

Through the process of acid cleaning and alkali cleaning, CIP remove macromolecular colloids, microorganisms, organic matter, inorganic substances and other fouling that have fouled on the surface of the RO membrane module during the long-term operation, to ensure the normal operation of the membrane system and extend the service life of the membrane module. In addition, the pretreatment of RO is also an important step to protect RO membrane modules and extend their service life.               In general, when the water production rate or desalination rate of the RO system is reduced to 10-15%, it is necessary to perform CIP treatment on the RO membrane module.

  • Extremely effective against oils and many other organic compounds
  • Excellent results when used to clean biological matter and eliminate biological slime from the membrane surface
  • Buffered to maintain an effective pH over a range of dilutions
  • Enhanced performance at elevated temperatures
  • Liquid cleaner which allows shorter mixing time
  • Low foam formulation
  • No adverse effects with repeated use
  • Cost effective membrane cleaner
  • Specially formulated to provide superior cleaning of organics, biofilm, colloidal and iron materials from membrane surfaces
  • Buffered to maintain desired pH over a range of dilutions.
  • Enhanced performance at elevated temperatures.

Antiscalant/ antifoulant

These products are a safe and highly effective liquid antiscalant/antifoulant developed to control scale precipitates and reduce particulate fouling within membrane separation systems. Use of this product provides longer run times and extended element life resulting in reduced operating and capital costs. The product has shown excellent results in membrane separation processes including RO, NF and EDR.

  • Controls calcium scales up to LSI +3.0, and is excellent at controlling calcium sulfate
  • Compatible with all standard RO, NF, and EDR membranes
  • Effective over a wide pH range
  • May be fed neat or diluted
  • Certified for use in potable water applications (Certified to NSF/ANSI Standard 60)
  • Compatible with feed-waters that contain aluminum and iron oxides
  • Effectively controls scales including silica, calcium carbonate, calcium sulfate, barium sulfate, and strontium sulfate


De-chlorine is a very cost-effective product used to remove free and combined chlorine from reverse osmosis and ultrafiltration feedwaters. This liquid product is a high-quality solution of sodium bisulfite. Feedwaters to membrane systems often contain chlorine to treat and prevent microbiological growth prior to the membrane separation process. This chlorine, however, can irreversibly damage thin film composite membranes by oxidizing the membrane surface. 

  • Extremely fast antimicrobial action in conditions found within membrane separation plants
  • Rapid degradation to relatively non-toxic end products. The dominant degradation pathway under use conditions involves reaction with nucleophilic substances or organic material found in natural waters
  • No adverse effects with repeated use
  • Certified by NSF International to NSF/ANSI Standard 60 for use as an offline reverse osmosis membrane biocide.


  1. BETZDEARBORN DCL20 (MemKare DX20)
  2. BETZDEARBORN DCL30 (MemKare DX 30)
  3. BIOMATE MBC2881E (MemKare NX 20)
  4. Biomate MBC781 (MemKare NX 10)