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Cleaning Procedure 8: Hydrochloric Acid and Halane or Peracetic Acid
Sanitizing and High pH Sanitizing
Where hardness or other metallic scale is present along with heavy biological fouling an acid
cleaning step is added to the beginning of the procedure.
Halane, a widely used source of chlorine, is useful for cleaning and sanitizing high-purity water
treatment equipment. Peracetic acid 0.04% / hydrogen peroxide 0.2% performs similarly using a
different chemical species. Due to their oxidizing power, these cleaning solutions should be used
infrequently.
For severe biological fouling a high pH step is added to the procedure for improved efficiency.
Steps
Cleaning Setup
Instruction 1
Instruction 5
Instruction 6
Instruction 3 or Instruction 4 (NOT BOTH)
Instruction 2
Instruction 7
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