DT 208 & 220 Digestor™

The DT 208 & DT 220 basic Digestion systems for Kjeldahl analysis consist of a digestion block and a tube rack. The digestion blocks are insulated to minimise heat transfer to the surroundings and allow fast, even heating for good working conditions and minimal energy consumption.

See how it works
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Full integration with Kjeltec systems for efficient and cost effective operations. Accessories that reduce handling hazards with minimum bench space.
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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, trace metal analysis by AAS or ICP instruments.

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  • SR 210 Scrubber Unit

    For Kjeldahl digestions the SR 210 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

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
Temperature range
100°C – 440 °C
Temperature setting repeatability 1°C
Temperature stability at 100°C ± 5°C
Temperature stability at 400°C ± 2°C
Heating up time 20 to 400 °Cat  230 V DT 208: ~35 min
DT 220: ~40 min
Installation requirements DT 208 Digestor DT 220 Digestor
Power supply  100 – 115 V, 50 – 60 Hz
200 – 240 V, 50 – 60 Hz
200 - 240V, 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 
3 -5 l/min for 5 minutes, then 1 l/min*
10 - 12 l/min for 5 minutes, then 3-5 l/min*
Ventilation requirement Exhaust system and fume hood Exhaust system and fume hood
*Not needed if scrubber is used  

Brochures and Papers