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  • Silver Analysis in Water
    Analysis of silver in water to the range of 0.1 ppm silver may be performed utilizing the following procedure. The sample solution should be free of mercury. Collect the sample within eight hours of analysis. Store in dark polyethylene bottle and take care to not allow insode of cap or bottle
  • Bromide Analysis in Water
    The following analysis is valid for bromide levels as low as 0.5 ppm. Check the deionized water used in reagent preparation. The specific conductivity should be no greater than 2.0 uSCM-1 (5 Mohms). Sample solutions should be free of iodide and sulfide ions. Equipment: Meter: pH/Millivolt meter
  • Trace Analysis Guide - A Guide for Attaining Reliable Measurements
    Some analysts refer to trace analysis as a measurement below one ppm (µg/g) while others use the term to describe an analyte concentration low enough to cause difficulty. This difficulty may be caused by the sample size or the matrix (i.e. - the concentration of the analyte of interest relative
  • Raman Analysis of Low Concentration Ions in Water (.pdf)
    for similar applications, the quantitative analysis of low concentration sulfate ion in aqueous solution down to as low as 2.5 ppm by conventional (Non-SERS) Raman is demonstrated.
  • Continuous, On-Line NIR Analysis of Process Gasses
    Near infrared (NIR) is not commonly associated with on-line analysis of process gasses in comparison to infrared (IR) and the ubiquitous, but maintenance-intensive gas chromatograph (GC). The purpose of this application note is to demonstrate not only the specificity, but also the quantitative
  • Overview of Rotating Disc Electrode (RDE) Optical Emission Spectroscopy for In-Service Oil Analysis
    The basis of modern oil analysis is the use of optical emission spectroscopy (OES) to measure the ppm (parts per million) levels of wear metals, contaminants and additives in oil samples. Whatever else an oil lab may measure, a multi-elemental analysis is the core of in-service oil analysis
  • Iodide Analysis in Water
    The following procedure is valid for iodide concentrations as low as 0.5 ppm. Check the deionized water used in reagent preparation. The specific conductivity should be no greater than 0.2 Scm-1. Sample solutions should be fresh and free of sulfide ions.
  • Nitrate Analysis in Water
    The Iotron Nitrate Electrode is a liquid ion exchanger electrode with a thin, inert membrane. Nitrate in unpolluted and waste water in the range of 20-150 ppm can be determined by this method. Many ions interfere with nitrate determinations. To avoid the interferences a buffer solution is added

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