How is permanganate controlled?
When permanganate reacts, manganese dioxide forms and the inherent pink color of the permanganate solution changes to yellow or brown depending on the concentration. Since an overdose of permanganate will result in “pink” water, the dose will have to be controlled. Automatic analyzers are available to measure permanganate residuals and control the feeder. Permanganate residuals can also be measured directly or by using some of the same procedures that are used for chlorine, that is, PAO, DPD and spectrophotometric.
Related Questions
- Do the same dual and third national restrictions apply to ITAR Controlled Data and Hardware if it is received under a DSP-5 or DSP-73 as opposed to a TAA?
- Can the foreign signatories continue to exchange amongst themselves controlled data that they have received under a TAA, after this TAA has expired?
- How can the spread be controlled?
