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Factory Direct Support
for PAC/PSPI On-Line Color
Quality Analyzers


For nearly 40 years, the people at
GL applied research and our subsidiary, Prometrics, have been helping customers in a diverse range of industries solve their measurement, control, and sampling problems.

As a quality instrument development and manufacturing company, we provide superior products directly and as an OEM supplier. We also assist other laboratory and process instrumentation manufacturers with their R&D, manufacturing, and service projects. The following examples are typical of our innovative approach to instrument development.



Photometric Process Analyzers

  • Fiber optic based colorimeters to measure the color quality of process streams and product haze detection monitors
  • Multi-wavelength on-line photometers for concentration or color value determinations of complex process streams
  • On-Line Dye Analyzer to detect and measure dye in hydrocarbon liquids

Laboratory Equipment

  • Digital petroleum analyzer for color determination
  • Benchtop presses which provide precise temperature and pressure control to develop
    and test new materials, composites, and laminating processes

OEM/Contract Developer & Manufacturer/Service Supplier

  • Hand-held photometric instruments for water quality analysis
  • Digital petroleum analyzers for salt-in-crude oil and color determinations of petroleum products
  • Process salt-in-crude analyzers for the measurement of salt content over a wide range of concentrations
  • Laboratory refractometers for direct readouts of the concentrations of a variety of liquids
  • Industrial conductivity meters for the electrodeless measurement of brine concentrations
  • Factory authorized service supplier for US and European instrument manufacturers
  • Fabrication of obsolete laboratory and process instrument components