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SYNERGISTIC COMBINATION OF METAL IONS WITH AN OXIDIZING AGENT AND ALGAECIDE TO REDUCE BOTH REQUIRED OXIDIZING AGENT AND MICROBIAL SENSITIVITY TO FLUCTUATIONS IN OXIDIZING AGENT CONCENTRATION, PARTICULARLY FOR SWIMMING POOLS

  • US 6,562,243 B2
  • Filed: 04/05/2001
  • Issued: 05/13/2003
  • Est. Priority Date: 04/05/2001
  • Status: Expired due to Fees
First Claim
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1. A method of treating the water of a pool or spa receiving ongoing organic contamination, the method comprising:

  • first-introducing at predetermined rate a chemical oxidizing agent insufficient to inhibit the growth of bacteria without the presence of metal ions but perpetually sufficient to inhibit the growth of bacteria in continuing presence of metal ions so long as the first-introducing is continued; and

    second-introducing metal ions into the water sufficient to inhibit the growth of bacteria should the first-introducing of the chemical oxidizing agent cease, and after such time as previously first-introduced chemical oxidizing agent is effectively completely consumed, but then only for a period of time, which period is at least twice as long as would otherwise be the case should the metal ions have never been present but which period is not perpetual, upon expiration of which period bacteria will ultimately grow in absence of the chemical oxidizing agent despite continuing second-introducing and continuing presence of the metal ions.

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