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AWC C-237

AWC C-237 Liquid high pH cleaner, used for removing organics, biofilm, iron and various heavy metals. Assists in removal of sulfate scales.

Advantages

  • AWC C-237 is a concentrated liquid formulation designed for use as a high pH cleaner of polyamide thin film composite membrane surfaces.
  • AWC C-237 works to remove the most stubborn biofilms and organic foulants.
  • AWC C-237 supports the cleaning of acid insoluble sulfates of calcium, barium and strontium as well as calcium fluoride.
  • AWC C-237 is especially effective in removal of metal oxide deposits when used in a pH range of 9 – 10.5.
  • AWC C-237 is buffered so as not to exceed a pH of 12.
  • AWC C-237 may eliminate need for repeat cleanings where severe fouling exists.
  • AWC C-237 is NSF approved for use as a membrane cleaner in potable water systems.
  • AWC C-237 is compatible with all Thin Film Composite R.O. membranes from all major membrane suppliers.

Typical Properties

Appearance……………………Clear Colorless to Light Yellow Liquid

Odor……………………………………….………Slight Characteristic Odor

pH (as is)……..…………………….………………………….………………..> 12

Specific Gravity…………………….…………………………..………1.1 ± 0.1

Water Solubility…………………………………..…….Completely Soluble

Chemical Feeding and ControlThe cleaning solution should be prepared using potable water that is free of residual chlorine or other oxidizing agents. Add 2 Gal of AWC C-237 to every 100 gal of water (2 % solution). Adjust the pH in the range 10 – 11. Recirculate the cleaning solution throughout the system, after redirecting the first 20% of the solution to drain. Do not exceed pressures, temperatures and flow rates recommended by the membrane manufacturer. Cleaning efficacy can be further improved by heating the cleaning solution and alternately circulating the solution for 15 minutes and then soaking the membranes for 15 minutes. This should be repeated as many times as necessary. pH range should be monitored periodically throughout the cleaning. When pH drops below the desired range, it should be adjusted by adding more AWC C-237. Optimal iron removal occurs at pH of 8.5 – 10.5.

Safety and Handling

Store in a cool, dry and well ventilated area. Keep containers closed. Wash contaminated clothes before re-use. Wash thoroughly after handling. Please see MSDS for more details.

Packaging

AWC C-237is packaged in 5 Gallon plastic containers. Other packaging is available upon request.

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