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  • Aggressive pH Monitoring for Aggressive Chemical Processes
    By Paul Thomas, Managing Editor Instrumentation for pH monitoring in the process industries leaves something to be desired, says Rob Pastushak, senior technical supervisor of pharmaceutical manufacturing for Raylo Chemicals (Edmonton, Canada), a member of Degussa s Exclusive Synthesis and Catalyst
  • pH Control for Pigment Production
    at the required levels to control ferric ion conversion. Ferric ion conversion is detrimental to the process of pigment production; therefore, pH must be closely monitored.
  • Inferred pH in Steam Plant Water Chemistry Monitoring
    Inferred pH means pH calculated from straight and cation conductivity. The calculation can be applied to condensate, feedwater, and boiler water. Although not widely used in the United States, inferred pH is popular in Europe. Some plant chemists find inferred pH useful because it eliminates
  • pH Measurement in Corn Wet Milling
    year in the U.S. alone. Each 56 pound bushel of corn requires at least 40 gallons of water, so large volumes of water must be treated, used, and then (perhaps) treated again before disposal. Tight monitoring and control of all this water captures the maximum from every bushel - this is where pH
  • Cyanide Destruction Monitoring with pH and ORP
    Mining and electroplating processes generate waste materials containing alkaline, rare earth metals, and other heavy metals such as iron, nickel, zinc, cadmium, copper, silver, and gold. The wastes often contain cyanide, a deadly poison. Federal and State regulatory agencies require that cyanide
  • pH and ORP Monitoring for the Indigo Dye Process
    Indigo dye is used for dyeing cotton and other cellulosic fibers such as rayon. In its pure form, indigo dye is not soluble in water, so the dye bath contains additives to solubilize it.
  • Smart Wireless Improves Lixiviation Performance Monitoring at Barrick Zaldivar
    copper compounds from ore is lixiviation (or leach pads). Sulphuric acid is a critical and expensive component in the process. Barrick wanted a cost-effective way to improve throughput with better control of the sulphuric acid's distribution by monitoring pressure and pH along the leach pad
  • Monitoring Bioreactors With In-Situ NIR
    By Robert Mattes and Denise Root, FOSS NIRSystems, Inc. The environment in the reactor due to pH and temperature is kept very stable, but there may be a step change at initial inoculation or infection. The pre-inoculation period usually has very little reference data for modeling, so in order

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