Measurement Principles
    InlineOnlineAt-line

    Raman Spectroscopy

    Raman spectroscopy measures molecular vibrations and enables chemical characterization without contact and without sample preparation.

    Installation Types

    Inline

    Sensor directly in the process stream — no sampling, continuous real-time measurement.

    Online

    Automatic sampling via bypass loop — short analysis times, close to the process.

    At-line

    Sample analysed next to the line — flexible location, manual or automatic sampling.

    Standards & Regulations

    ICH Q2EP 2.2.48ASTM E1840ICH Q8FDA PAT Guidance

    FAQ

    Dusko Kadijevic | Publisher Analytic Journal | analyticjournal.com

    Written October 2026. All content formulated in our own words, created with AI assistance.