UDK Automatic Kjeldahl Nitrogen and Protein Analyzer

Home » UDK Automatic Kjeldahl Nitrogen and Protein Analyzer

Available models:

UDK 169 – full automation with integrated colorimetric titrator
UDK 159 – automatic distillation and titration with advanced controls
UDK 149 – automatic distillation with external potentiometric titration connectivity

The UDK series of automatic Kjeldahl analyzers is designed for high-throughput laboratories, ensuring fully automated distillation and titration for nitrogen and protein determination. These devices optimize productivity, reducing analysis time and ensuring maximum accuracy.

UDK analyzers support a wide range of applications, including TKN, total nitrogen, ammoniacal nitrogen, Devarda method, TVBN, sulfites, phenols, volatile acids, cyanides, and alcohol content. With the AutoKjel autosampler, laboratories can fully automate batch processing, reducing the need for operator intervention.

Efficiency and automation for precise analysis

UDK analyzers are equipped with VELP’s patented titanium condenser, ensuring efficient thermal exchange and reduced water consumption. The exclusive Technopolymer Splash Head provides chemical resistance and extended durability.

Key features:

Automatic steam regulation (10%–100% output)
Smart reagent dosing – automated boric acid, sodium hydroxide, and water control
Real-time monitoring with 7” touchscreen and VELP Ermes Cloud connectivity
Safety sensors – reagent level detection, tube positioning, cooling water flow monitoring

Designed for continuous operation, UDK analyzers deliver high reproducibility and require minimal maintenance with no need for frequent calibration.

Advanced technology and reliability

Automated distillation and titration significantly reduce reagent consumption and analysis time, lowering operational costs. Thanks to TEMS™ technology (Time, Energy, Money, Space), UDK analyzers offer:

Time savings – fast analysis and reduced manual work
Lower energy consumption – optimized resource usage and lower CO₂ emissions
Cost efficiency – fewer consumables and extended instrument lifespan
Compact design – ideal for labs with limited space

With LIMS compatibility, data export in .xls, .txt, and .csv formats, and a flexible range of applications, UDK analyzers provide a superior solution for nitrogen and protein determination.