Operator-Friendly Technique and Quality Control Considerations for Indigo Colorimetric Measurement of Ozone Residual

摘要: Drinking water ozone disinfection systems measure residual concentration, C, for regulatory compliance reporting of concentration-times-time (CT), and the resultant log-inactivation virus, Giardia Cryptosporidium. The indigotrisulfonate (ITS) colorimetric procedure is Standard Method measuring residual. Although currently written relatively easy to implement, its accuracy depends on specific ITS quality control considerations. based upon quantities materials sample volumes, which make it somewhat inflexible. Tests are often performed in plant surroundings by operating staff, as opposed certified laboratories analytical chemists. In this paper, a more flexible, quality-assured “operator-friendly” technique presented method. This manuscript investigates several aspects method (e.g. effects aging, storage temperature, supplier, weight measurement, manganes...