RoClean™ L211, Colloidal Silica Removal - Avista™
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RoClean L211

RoClean L211 is a liquid multicomponent, high pH buffered, low foaming cleaner formulated to remove colloidal silica, clay, organic color, and bioslime from reverse osmosis (RO) membranes. This cleaner is successfully applied to systems operating on seawater, brackish water, or wastewater where liquid cleaner is preferred. RoClean L211 is a highly effective foulant remover but gentle enough for daily application if required. RoClean L211 is NSF approved and/or EN12124 compliant for drinking water treatment chemicals.

Performance Benefits

  • A proprietary blend of dispersants, low foaming surfactants, and chelants that dissolves organic foulants and dispersed colloidal particles.
  • Highly buffered to resist pH changes during the cleaning process.
  • Compatible with polyamide membranes from all membrane manufacturers.
  • Suitable for use with other Avista cleaners.


Product packaging and labels may vary. These images represent packaging and labels for products manufactured and fulfilled by Avista Technologies Inc. in the United States.

Product Data Sheet
Download Product Information Sheet – RoClean L211
Safety Data Sheet

If you would like to request a Membrane Cleaner Material Safety Data Sheet, please email Avista Compliance and Regulatory at, call your regional distributor, or click to submit your request.