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FOSS - Flour Analyzer - NIRS™ DS2500

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.


Unsurpassed accuracy for ash analysis. Ready to use calibrations for all key parameters. Robust and proven technology ensures reliable results.

Sample type

Flour and grains.


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

Technical 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 700 - 2500 nm < 20 micro au

**Noise = RMS for 10 co-added, 10 second scans

Key features


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.

NIRS™ DS2500 - the next step in flour analysis with NIR

  • Biopharmaceutical and Biotechnology
  • Education & Academics
  • Environmental
  • Food & Beverage
  • Pharmaceutical
Foss Analytical

FOSS creates end-to-end solutions that secure and improve food quality. From raw material to finished product. Our analysis instruments refine measurements into information management that enables businesses to run intelligent data-driven productions with less waste and bigger yields. Controlling cost and quality across all sectors and value chains, we help food and agricultural producers limit the number of human errors, scale their business faster and reduce manual labor as well as labor costs. We call it analytics beyond measure.

We cover these food and agricultural industries: Dairy, Feed and Forage, Grain, Flour Milling & Oilseed Processing, Laboratories, Meat, Raw Milk Testing and Wine.

Over the last 60 years, we have made it our business to define the standard of analytical solutions for the food and agricultural industry. We pioneered advanced analysis for the challenging production environments in the 1960’s, and we were the first to integrate chemical composition analysis in process lines. Now our resolve and ambition have also made us the international benchmark in the field of chemometrics and real time analytics.