LimsPulse
Spectroscopy

Near-infrared (NIR) spectrometer

Measures how a sample absorbs near-infrared light (about 780–2500 nm) through glass or plastic, in seconds and without sample preparation. Used with chemometric libraries for raw-material identity testing, blend monitoring and moisture.

  • Pharmaceutical
  • Agriculture & grain
  • Food & beverage
  • Petrochemical
  • Polymers
  • Animal feed
Photo of a Near-infrared (NIR) spectrometer
Photo: Allancik, CC BY-SA 4.0 (cropped), via Wikimedia Commons
PREVENTIVE MAINTENANCE

Maintenance checklist

Daily / each use

  • Run the automatic performance test
  • Clean the sample window or probe tip
  • Check for scratches on the window

Monthly

  • Review performance-test trends (noise, wavelength, energy)
  • Check fibre-optic cables for kinks or damage
  • Check desiccant indicator if fitted

Six-monthly / annual

  • Calibration of wavelength accuracy and photometric linearity with external certified standards
  • Preventive maintenance by a trained engineer (lamp, laser in FT units, desiccant)
  • Periodic review of library and model performance
SAFETY

Safety precautions

Before you work on the NIR
  • The tungsten-halogen lamp and its housing get hot; let them cool before maintenance.
  • FT-NIR instruments contain a low-power reference laser; do not remove covers.
  • When testing in the warehouse, follow the material's safety data sheet and the sampling area's PPE rules, even though the bag is not opened.
  • Use isopropanol for cleaning only in small amounts and away from ignition sources.
In LimsPulse · Calibration Management

Keep every NIR in control: usage logs, calibration and maintenance schedules, and automatic blocking of overdue instruments.

See how