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Home > Fields of Activities > Kjeldahl Solutions > Products > Digestion > SpeedDigester K-439

SpeedDigester K-439

The revolutionary way of digesting

The SpeedDigester K-439 combines all advantages of IR and block heating digestion systems.


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Perfect reproducibility thanks to temperature control


The SpeedDigester K-439 is revolutionizing Kjeldahl digestion. It is the only IR digestion system that has an integrated temperature sensor, so that digestion at exact temperatures is achievable. The advantages of IR and block heating systems are now combined. Using modern application software, digestion methods (temperature ramps and time) can be programmed and saved in the database with a method name. The SpeedDigester K-439 also features an LC display which allows the user to observe the progress during a digestion as a graphical display.

  • Fast heating and cooling result in significant time savings and as a consequence increased sample throughput
  • Exact temperature control makes it possible to set temperatures; an aspect that contributes to excellent reproducibility
  • 20 pre-defined BUCHI digestion methods and 30 individually programmable methods ease routine operation
  • If a scrubber is connected, it is automatically switched on at the start of the digestion and off again at the end of digestion.

SpeedDigester K-439

  • 12 x 300 ml sample tubes or
  • 12 x 100 ml sample tubes or
  • 10 x 500 ml sample tubes with the same instrument

Advantages of BUCHI IR digestion:


  • Time savings due to short heat-up and cool-down times
  • Reproducibility thanks to integrated temperature control
  • Use of 300, 100 or 500 ml tubes with the same instrument
  • Simultaneous and even boiling of all samples
  • Fully sealed suction system for the removal of acid fumes

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1154392400

SpeedDigester K-439 for 3rd party tubes

(230V, 50/60 Hz)
for sample tubes of 3rd party production

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1154392300

SpeedDigester K-439 for H2O2-digestion

(230V, 50/60 Hz)
Digestion with H2O2 cuts digestion time by 50%, no heavy metal catalyst is needed and problem-free digestion of foaming samples is guaranteed.
System with special accessory for H2O2 addition.

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1154392100

SpeedDigester K-439 standard

(230V, 50/60 Hz)
Standard completion for 300 ml sample tubes

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1154392500

SpeedDigester K-439 with 500 ml tubes

(230V, 50/60 Hz)
For the use of ten 500ml sample tubes

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1154392200

SpeedDigester K-439 with condensate trap

(230V, 50/60 Hz)
With tight suction modules with condensate trap for 300 ml sample tubes

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last modified: 26 September 2011
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  • Digestion Systems (pdf, 1.15Mb)
  • Original Glass-Ware (pdf, 3.4Mb)
  • Products & Solutions EN (pdf, 1.33Mb)
  • Kjeldahl Solutions (pdf, 1.16Mb)
  • Kjeldahl DIN ISO Methods (pdf, 104.45k)
  • Kjeldahl AOAC Methods (pdf, 90.08k)
  • All Downloads

Buchi community *

  • Manuel d'instructions SpeedDigester K-439 (pdf, 1.85Mb)
  • Operation Manual SpeedDigester K-439 (pdf, 1.84Mb)
  • Manual de instrucciones SpeedDigester K-439 (pdf, 1.85Mb)
  • Betriebsanleitung SpeedDigester K-439 (pdf, 1.85Mb)
  • Istruzioni per l'uso SpeedDigester K-439 (pdf, 1.84Mb)

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Complementary products

  • Scrubber B-414
  • Sample Preparation
  • Distillation Unit K-350
  • Distillation Unit K-355
  • Auto Kjeldahl Unit K-370
  • Kjeldahl Sampler K-371
  • KjelFlex K-360

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