Infrared speeddigester for nitrogen determination and chemical oxygen demand

Effortlessly enhance your laboratory throughput with high-speed digestion for precise nitrogen and chemical oxygen demand analysis in diverse samples, ensuring streamlined fume management and superior sample integrity.

The SpeedDigester K-425, K-436, and K-439 from BUCHI provide a versatile solution for efficient laboratory digestion. These infrared and reflux digesters excel in performing rapid and flexible Kjeldahl and COD digestion processes, along with various sample types like food, soil, and industrial wastewater. With a temperature range of 50–580°C, the digesters support multiple sample sizes and applications, enhancing productivity in food, environmental, and chemical analysis. The K-439’s automation capabilities, complete with programmable temperature settings and scrubber control for safe fume handling, optimize laboratory workflows. Designed for seamless integration, these units ensure high throughput and result reproducibility while offering optional customization and engineering support for diverse laboratory needs.

Benefits

  • Maximizes sample throughput and reduces process time via rapid heating and cooling.
  • Enhances laboratory safety with sealed fume extraction and neutralization.
  • Provides flexibility for varied sample sizes and applications, adapting to specific testing needs.
  • Saves laboratory space with compact, bench-top design.
  • Supports operational efficiency by allowing parallel tasks during automated digestion cycles.
Applications
Chemicals,Food,Water testing,Environmental analysis,Industrial effluents,Soil samples,Feed industry,Nutrients,Pharmaceuticals
End products
Animal feed,Industrial wastewater,Water quality testing kits,Pharmaceutical tablets,Pasta,Fertilizer components,Soil amendments,Protein isolates,Processed meat products
Steps before
Sample Preparation,Milling,Homogenization
Steps after
Distillation,Analysis,Neutralization,Measurement
Input ingredients
nitrogen samples,aqueous samples,Kjeldahl digestion samples,samples for hydroxyproline,samples for phosphate determination,samples for COD (Chemical Oxygen Demand),samples containing heavy metals
Output ingredients
digested samples,total Kjeldahl nitrogen,determined COD,detected heavy metals,determined phosphate levels,hydroxyproline measurement
Maximum Temperature
580°C
Sample Positions
5 - 12
Sample Parameters
Total Kjeldahl Nitrogen (TKN),Chemical Oxygen Demand (COD),heavy metals,phosphate
Scrubber Control
No/Yes
Temperature Range
50 – 580°C
Compatibility with BUCHI Sample Tubes
100 mL,300 mL,500 mL
Heating Chamber Operation
Manual temperature setting,infinitely variable from level 1 to 10
Automation
No/Yes
Display
No/Yes
Temperature Programs
No/Yes
Possibility to have an IQ/OQ
No/Yes
Cooling Method
Quick cool-down process
Fume Capture System
Sealed Suction
Glass Assembly
Multiple options for different digestion processes
Condensate Trap
Available for aqueous samples
Chemical Used
H₂O₂
Automation level
Manual / PLC
Batch vs. continuous operation
Batch
Cleaning method
Manual / CIP
Energy efficiency
Efficient due to fast heating/cooling
Density/particle size
0.5–2.5 g/cm³
Sample Positions
5 - 12
Max. Temperature
580°C
Sample tube sizes
100 mL,300 mL,500 mL
Suction module type
Standard,with condensate trap,with capillary funnels
Heating chamber operation
Individual manual temperature setting
Temperature control
Infinitely variable from level 1 to 10
Kjeldahl and reflux digestion
Combined in one instrument
Market info
Buchi is renowned for its expertise in laboratory and industrial solutions, particularly in producing high-quality equipment for chemical analysis and lab processes, known for precision and reliability in the pharmaceutical, chemical, and food industries.