Kjeldahl Digestion Units

Overview Group


The digester is a widely used instrument in laboratories performing nitrogen analysis for diversified applications in food&feed, beverage, environmental, chemical and pharmaceutical industries.


  • The most common nitrogen & protein determination technique
  • Applications in multiple markets
    Food & Feed / Beverages (nitrogen, protein, Total Kjeldahl Nitrogen)
    Environmental (COD, Total Kjeldahl Nitrogen)
    Chemical and Pharmaceutical (organic nitrogen) industries
  • Conformity with multiple standards protocols
    AOAC, ISO, EPA, DIN etc.
  • Kjeldahl analysis method
    - Break down the bonds that hold the polypeptides together
    - Convert them into simpler molecules such as H2O, CO2 and NH3
    - Reactions can be speeded up
    by higher temperature used during digestion
    by the presence of acid, salt and catalysts
    - During the reaction corrosive, toxic gases are created
    for example SO2 and SO3
    - Gases can be neutralized using the VELP
    Dedicated pump, able to aspirate gases and vapors
    Scrubber to capture final traces of toxic fumes
  • VELP also offers consumables to speed and and simplify digestions



DKL Series Automatic Kjeldahl Digestion Units

Fully Automatic Kjeldahl Digestion Units for nitrogen analysis and protein determination that incorporate the revolutionary TEMS™ technology for unprecedented Savings in terms of Time, Energy - as much as 35%, Money and Space.
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DK Series Kjeldahl Digestion Units

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.
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JP - Recirculating Water Pump

Recirculating Water Pump that ensures optimum aspiration depending on the digestion phases and the number of samples placed in the digester connected to the pump.
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SMS Scrubber

Designed to neutralize corrosive and toxic fumes produced during oxidative mineralizations or similar processes. 
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