SPECTROSCOPY

NIRQuest+ NIR Spectrometers

NIR spectrometer

NIRQuest+ spectrometers have an enhanced optical bench design for higher-sensitivity performance and are
available in three convenient configurations – NIRQuest+1.7 (900-1700 nm), NIRQuest+2.2 (900-2200 nm) and NIRQuest+2.5 (900-2500 nm). The NIRQuest+ is our flagship NIR spectrometer.

NIRQuest+ spectrometers can be used in the lab or on the line, such as on a conveyor belt or in a sample stream. Applications include characterization of materials; identification of plastics in recycling; and measurement of chemical concentration of liquids.

Catalogue
Features
  • NIRQuest+1.7 : 900-1700 nm
  • NIRQuest+2.2 : 900-2200 nm
  • NIRQuest+2.5 : 900-2500 nm
  • Entrance aperture (slit) : 25 µm
  • Order-sorting : OF1-RG830 longpass filter; transmits >830 nm
  • Thermal stability : thermoelectric cooling to -20 °C for low dark current
  • Optical resolution : ~3.4-10.8 nm (FWHM) depending on model
  • Relative sensitivity gain : up to 2.5x versus previous models
  • SNR: up to 13000 : 1 depending on model
  • Integration time : 1 ms-200 ms
Key Applications
  • When measurement speed matters : With better sensitivity comes better signal-to-noise ratio (SNR) performance over a shorter time frame (integration time). This is ideal when you have samples moving on a conveyor belt, or liquids flowing in a process stream.
  • Where low limits of detection (LOD) matter : Very small changes in absorbed signal are typical of harmonic overtones in the NIR. Higher sensitivity enables better measurement accuracy, particularly in low light conditions.
  • When reflection measurements at longer wavelengths matter : Diffuse reflection measurements at longer wavelengths (to 2500nm) often lack enough signal for good measurements. Higher sensitivity measures the reflection with much lower noise levels, resulting in “cleaner” spectra.
Key Specifications