Captor® is an aqueous solution of calcium thiosulfate designed to be used in various water treatment systems. It’s a nearly odorless, colorless, non-hazardous, non-toxic solution with a concentration of 30% (w/v) and a typical pH of 6.5-8.0. Captor® is certified in accordance with ANSI NSF Standard 60 for drinking water treatment.


Captor®, a relatively new product, is now available to the potable water and wastewater treatment industries. It is used effectively to reduce residual Ozone, Chlorine and Peroxide.


Captor® is solving a number of traditional problems for plant operators and offers several advantages over the use of alternative chemicals, including:

  • A safe, non-hazardous solution
  • If spilled, it is not a reportable chemical
  • No potential SO2 exposure
  • Nearly odorless
  • Water clear
  • Sodium free
  • pH neutral
  • Maintains a low freezing point
  • Carrier water not required

Modernize your treatment process and go green with Captor®!

Application, Chemical Reaction & Dosage Infromation