Kjeldahl Solutions
 | IQ/OQ certification for Kjeldahl systems
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Steam distillation is a key step in analytical processes in a broad range of laboratories. BUCHI Kjeldahl Solutions are a flexible concept which reflects this variety and supports analytical labs in solving their specific analytical problems. A comprehensive package of support and services rounds off the offering.
IR and block digestion
Digestion systems are used to convert nitrogen containing substances (e.g. proteins) in a sample (e.g. milk) into the appropriate form of nitrogen. Beyond classical Kjeldahl digestions, additional applications such as the determination of COD (Chemical Oxygen Demand) can be carried out with the block digestion system.
During the digestion process, acid fumes and reaction gases may emerge. A scrubber is connected to the digestion system for neutralizing acid fumes and adsorbing unpleasant odors.
Distillation and titration
Digested samples can be processed directly in one of BUCHI’s high-efficiency distillation units. The range of applications includes classical Kjeldahl tasks such as TKN (Total Kjeldahl Nitrogen) or Devarda as well as the direct distillation of other volatile components such as alcohol, sulfur dioxide, phenol, volatile acids, TVBN (Total Volatile Basic Nitrogen), formaldehyde and cyanide.
Reflecting different automation requirements, some distillation units actually combine the distillation step with the determination, for example by titration. The product range features an expandable distillation unit with the option of connecting it with a titrator of your choice as well as an automated unit with integrated titration.
Wet digestion
The B-440 Wet Digester allows an ecological preincineration of your samples. Sulfated ash determination is a standard test method with a broad range of applications in pharmaceutical production, food quality control, environmental testing and many other areas.