Need support?

Please leave a message


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

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.


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.


Digestor™ 2508 and 2520

The 2508 and 2520 Digestor™ series for flexible and safe Kjeldahl digestion with different levels of automation.

Digestor 2508 Digestor 2520
Tubepositions 8 tubes 20 tubes
Automation Automated Automated
Tube volume **100 ml, 250 ml and 400 ml 250 ml and 400 ml
Options Rack system / Auto lift / Exhaust / Scrubber Rack system / Auto lift / Exhaust / Scrubber
Power supply 200-240 V, 50-60 Hz 200-240 V, 50-60 Hz
Power consumption 1100 W 2300 W
W x D x H (mm) 300 × 440 × 140 300 × 600 × 140
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
Weight net 10 kg 18 kg

* Time and temperature

** Adapter required

Technical Specifications

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
Ventilation requirement Exhaust system and Fume hood

Learn How Automated Kjeltec Provides More Consistent Lab Results

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.