Kjeldahl Digestion

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Hanon SH420F Kjeldahl Digestion ststem adopts globally advanced high-temperature infrared t radiation heating technology and microprocessor control platform, boasts accurate temperature control and quick temperature rise. It has two kinds of temperature rise mode: linear and curve temperature rise mode, and offers 20 digestion programs for control of temperature rise curves. 

Hanon neutralization system has many functions such as triple filtration, condensate recovery of exhaust gas, filtration and neutralization device. The product adopts high-quality Anticorrosive Pumps, low noise, strong suction, reduce exhaust emissions,eco-friendly.


  • 20 positions, enhance working efficiency rapidly.
  • Graphite block have longer life after special anti-oxidation processing and heating more uniform.
  • It adopt advanced insulation technology, eco-friendly, reduce energy intensity maximum limitedly.
  • Corrosion-resistant design.
  • It adopt advanced PID temperature control technology, high accuracy heating up to 400℃ only cost 25minutes.
  • Temperature control model: Program control, curve and linear temperature rise.
  • Multi-protection, Over-current protection, high temperature warning, overload protection.
  • It adopts 5.7” color screen, easy for use.
  • It can pretreat for microwave digestion or removing acid after digestion.
  • Standard configuration with waste gas collection hood.

US$ 5.437US$ 5.437

Traditional Kjeldahl Digestion Units for nitrogen analysis and protein determination, with an aluminum heating block that offers an excellent thermal homogeneity, with a maximum working temperature of 450°C.

High Performance

  • Excellent thermal homogeneity
  • High temperature stability with aluminum block
  • Good repeatability of temperature
  • Premium quality consumables

Convenient to Use

  • Choice of 6 operating languages
  • LCD display of all parameters
  • 20 customizable program memories

Practical Considerations

  • Very small footprint
  • Constantly monitor the digestion process on display
  • Conforms to Good Laboratory Practice standard

New: The successor models KT and KT-L for up to 40 simultaneous Kjeldahl digestions replace the proven digestion system KB and convince with unique product characteristics and functions.

The C. Gerhardt digestion blocks are perfectly adapted to the needs of accredited laboratories and ensure the validity and reproducibility of the analysis results by automating and documenting the process steps.

Ideal for subsequent Kjeldahl distillation with the VAPODEST® distillation units.

Different models available up to the top model, the KT-L, which is a future-proof investment through state-of-the-art technology.

The Labtec DT 208 basic digestion system for Kjeldahl analysis consist of a digestion unit and a tube rack. The digestion unit is insulated to minimise heat transfer to the surroundings and allow fast, even heating, thus giving good working conditions as well as saving energy. The DT 208 have a built in, user definable, time and temperature controller and Display.


Sample: Food, feed, water, wastewater and a wide range of industrial compounds
Parameters: Kjeldahl digestions, chemical oxygen demand, trace metal analysis by AAS or ICP instruments
Tube positions: 8 tubes
Tube volume: 100 ml or 250 ml
Options: Manual lift, exhaust, scrubber

The Kjeldahl method KjelDigester reduces the block digestion process by up to two hours and meets the highest safety requirements. The high degree of automation is the perfect match to the KjelMaster System allowing for unprecedented sample throughput.

  • Acceleration of the heating and cooling step, saving up to two hours
  • Direct transfer of the 20 position rack to the KjelSampler
  • Unattended operation by using automatic lift and delayed start time (K-449 only)
  • Programmable time / temperature profiles and full Scrubber K-415 control (K-449 only)