Today, disinfection and dechlorination in water can be precisely controlled by High Resolution  Redox ® (HRR), a result of Siemens Water Technologies Stranco Products research and development in both probe and controls technology. In applications worldwide, HRR technology is used to control the addition of chlorine, bromine, ozone, sulfur dioxide, sodium metabisulfite and sodium bisulfite for both municipal and industrial applications.

Chlorine in water kills bacteria and viruses by stealing electrons. Some chlorine compounds are much more toxic than others, and have higher electrical attraction. The more of the toxic forms of chlorine, the higher the attraction. The more abundant the organics, the weaker the attraction. The net attraction is measured as Oxidation Reduction Potential (Redox). Strantrol HRR controllers give you a direct, on-line measure of chlorine’s “work value” and respond to chlorine demand by adjusting the feed rate. Strantrol controllers accurately and reliably control disinfection, regardless of the mix of chlorine compounds, pH, flow, temperature, and most importantly, organic load. Strantrols that have replaced flowpacing have routinely reduced chlorine use by 20-60%. With Strantrol control, precisely as much chlorine as is needed is fed, and no more. Second-by-second. Automatically. Exactly matching dosage to demand minimizes the need for dechlorination, and a lot of the work you had to do to stay in compliance.