NIRS™ DS2500 Flour Analyser

The NIRS™ DS2500 analyser helps millers to boost yield by offering unsurpassed, rapid analysis of ash in addition to reliable flour analysis for protein and moisture. Robustness coupled with groundbreaking performance in near infrared (NIR) guarantees uniquely accurate measurements by anyone, anywhere, at anytime.

See how it works
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Unsurpassed accuracy for ash analysis. Ready to use calibrations for all key parameters. Robust and proven technology ensures reliable results.
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Sample type

Flour and grains.
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Ash, protein, moisture, wet gluten, water absorption and many more.

As a flour miller you know the impact ash can have on quality and profit. Find out how the NIRS DS2500 can help.

Get an obligation free analysis about profit and quality improvement opportunities for your specific production. Get a Quote Let's talk


  • FossAssure™

    FossAssure™ is a NIRS™ DS2500 digital service designed to reduce product waste, secure brand protection and increase profitability by ensuring the quality and precision of your analytical results. Besides, FossAssure™ services will also improve instrument uptime and reduce production costs by optimising the operation and the performance of your instruments.
  • Purpose built

    Robust, easy-to-use and IP65 certified the NIRS™ DS2500 allows everyone to contribute to quality. Measurements take less than a minute and the instrument is rock solid even when subjected to conditions of damp, dust, vibrations or temperature fluctuations.
  • Ash accuracy anywhere

    The NIRS™ DS2500 has been designed for high performance in the hardest production environments. It is IP65 certified and boasts outstanding environmental specs: Ambient temperature 5-40 °C, storage temperature -20 °C to 70 °C and ambient humidity <93% RH.
  • Unmatched optical performance

    Performance across the full wavelength range of 400 to 2500 nm. Make sure that you are getting the highest level of quality control at all stages of production. Whether you are testing moisture, protein, ash or color, the NIRS™ DS2500 delivers precision results in under a minute.

Technical specification

Feature Specification
Dimensions (W x D x H) 375 x 490 x 300 mm
Weight 27 kg
Degree of protection IP 65
Measurement mode Reflectance or transflectance (for liquids)
Wavelength range 400 - 2500 nm
Detector Silicon (400 - 1100 nm), lead sulfide (1100 - 2500 nm)
Optical bandwidth 8.75 ±0.1 nm
Spectral resolution 0.5 nm
Number of data points 4200
Absorbance range Up to 2 AU
Analysis time <1 minute*
Wavelength accuracy limit 0.2 nm
Wavelength repeatability limit 0.015 nm
Photometric noise** 400 - 700 nm < 50 micro au
700 - 2500 nm < 20 micro au
* Adjustable
** Noise = RMS for 10 co-added, 10 second scans
Installation requirements
Voltage supply
100-240 V AC *, frequency 50-60 Hz, Class 1, protective earth
Ambient temperature 5 - 40°C
Storage temperature -20 to 70°C
Ambient humidity < 93% RH
Mechanical environment Stationary during use
EMC environment Laboratory use, industry requirements
* Mains supply voltage fluctuations not exceeding ±10% of the rated voltage.

Legal data

The equipment is CE labelled and complies with the following directives:
• EMC (ElectroMagnetic Compatibility) Directive 2004/108/EC
• LVD (Low Voltage Directive) 2006/95/EC
• Packing and Waste Directive 94/62/EC
• RoHS Directive 2002/95/EC
• WEEE Directive 2002/96/EC
• REACH Directive 1907/2006/EC

PC requirements
Contact your local FOSS representative for information.

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