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  • Caustic in Water with a ClearView Filter Photometer System
    Purpose: To measure NaOH concentration in water on-line with the no moving parts ChemView (R) filter photometer and a fiber optic flow probe for a slip stream. Approach: There are several ways to analyze a mostly aqueous stream. Water is an intense absorber in the NIR, requiring small optical paths
  • Caustic & Carbonate On-Line Monitoring with a ChemView (R) Photometer
    Purpose: To simultaneously measure caustic (NaOH) and sodium carbonate in aqueous process streams, particularly at low (<2%) caustic concentrations, using a ChemView (R) NIR photometer and fiber optic probe. Background: The dominance of water in the NIR hampers the measurement of caustic
  • Water in Acetic Acid & p-Xylene with a ChemView (R) Filter Photometer
    Challenge: Can quantitative analysis be done with a multiple wavelength filter photometer? Background: The spectra of this 3-component mixture are complex. Initial visual inspection suggests that a complete spectrum and multivariate analysis (PLS - partial least-squares) are required. Experimental

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