Digestor™ 2508 and 2520

FOSS Tecator line Digestion systems allow fully automated digestion for convenient, safe and flexible Kjeldahl analysis. Two way PC communication supports traceability and GLP. Capable of handling eight or twenty tubes.

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Free up time for other tasks with fully automated digestion. Convenient, safe and flexible operation backed by data and application logging.
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Sample type

Feed, feed ingredients, forage, pet food, food, food ingredients, grain, cereal, meat, meat products, fish, fish products and dairy products.
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Kjeldahl digestions, chemical oxygen demand and other reflux chemistries and trace metal analysis by AAS or ICP instruments.

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“Everybody can operate it, it’s clean and we have less contact with chemicals”

Learn how Denofa soya crushing plant in Norway have achieved more consistent results with automated Kjeltec™, while saving time and labour.


  • 2501 Scrubber Unit

    For Kjeldahl digestions the 2501 Scrubber Unit should always be considered for safe and efficient neutralisation of corrosive gases. This replaces the water aspirator, supplied as standard. 
  • Exhaust manifolds

    All models are delivered with a tube rack with integrated heat shields. They should always be combined with a matching exhaust manifold designed for each Digestion Unit facilitating fume removal, or reflux head and test tubes - 100 ml, 250 ml or 400 ml volume. 
  • Accessories

  • Software

    Auto systems have memory for up to 127 FOSS Applications and 127 User Applications. There are currently more than 80 FOSS applications in the CD Library supplied. 

A Digestor to suit every need

The Digestor™ series consists of four models: the 2508, 2520, DT 208 and DT 220 for flexible and safe Kjeldahl digestion with different levels of automation.
Digestor 2508 Digestor 2520 DT 208 DT 220
Tubepositions 8 tubes 20 tubes 8 tubes 20 tubes
Automation Automated Automated
Tube volume **100 ml, 250 ml and 400 ml 250 ml and 400 ml
**100 ml, 250 ml and 400 ml 250 ml and 400 ml
Options Rack system Rack system Rack system Rack system
  Auto lift Auto lift
  Exhaust Exhaust
  Scrubber Scrubber

* time and temperature
** Adapter required


8 tubes/
Digestion tubes for FOSS Digestor

Flexible system

These versatile digestion systems are capable of handling eight or twenty tubes in volumes of 100 ml., 250 ml. or 400 ml. tubes dependant on chosen configuration.

Technical specification

Performance data at 230 V
Temperature range
Ambient - 440°C
Temperature setting repeatability 1°C
Temperature stability at 100°C ± 2°C
Temperature stability at 400°C  ± 1°C
Heating up time 20 to 400 °Cat  230 V Digestor 2508: ~35 min
Digestor 2520: ~40 min

Digestion application memory

Up to 254
Digestion steps per application Up to 23
Lift connection Yes, full control
Scrubber Digestor 2508/2520: Yes, full control
Tubes/batch Digestor 2508: 8 tubes
Digestor 2520: 20 tubes
Installation requirements Digestor 2508 Digestor 2520 
Power supply  200-240 V, 50-60 Hz  200-240 V, 50-60 Hz
Power consumption 1100 W
2300 W
Weight net  10 kg 18 kg
Dimensions (W x D x H)  300 × 440 × 140 mm
300 × 600 × 140 mm
Water supply
EM 2508 Exhaust Manifold:
3 -5 l/min for 5 minutes, then 1 l/min
EM 2520 Exhaust Manifold:
10 - 12 l/min for 5 minutes, then 3-5 l/min 
Ventilation requirement
Exhaust system and Fume hood
Digestor 2520

Brochures and Papers

Companies using this solution