VELP UDK 159 Automatic Kjeldahl Nitrogen Protein Analyzer

Safety, Efficiency and Precision for High-Throughput Laboratories

The VELP UDK 159 Automatic Kjeldahl Nitrogen Protein Analyzer is designed for high-throughput laboratories seeking precise and reproducible results for Kjeldahl nitrogen (TKN), proteins, ammoniacal nitrogen, nitric nitrogen (Devarda), TVBN, sulfites, phenols, volatile acids, cyanides, and alcohol content.

• Fully automatic process ensures efficient simultaneous distillation and titration
• Shortest time-to-results with online titration and automatic result calculation
• Premium accuracy via integrated colorimetric titrator with high precision burette
• Programmable boric acid, water, sodium hydroxide addition
• Selectable steam generation output level (10%–100%)
• Automatic residue removal from titrator and sample tube
• Smart User Interface with digital display for intuitive operation
• Maximum operator safety and flexibility with various accessories

Premium Accuracy and Precision

The automatic Kjeldahl analyzer UDK 159 colorimetric titrator guarantees accuracy, precision, and long lifetime.
LOD: 0.015 mgN, LOQ: 0.04 mgN — ideal for low nitrogen samples.

The system uses colorimetric measurement with automatic endpoint detection.

VELP Colorimetric Titrator Benefits:

• Fully automatic operation
• Calibration-free
• Maintenance-free

Real-time titration monitoring with on-screen graph display.

Unrivalled Technologies – Titanium Condenser & Technopolymer Splash Head

The patented VELP titanium condenser ensures efficient thermal exchange and low water consumption.
Distillate temperature is maintained below 35 °C per Kjeldahl method without nitrogen loss.

• Reduced water consumption
• High resistance and long lifespan
• Lower break risk during cleaning

The Technopolymer Splash Head ensures durability and resistance for high throughput.

• Chemical-resistant materials
• Lifespan up to 10,000 analyses
• Maintenance-free

Reliability and Safety for Your Lab

Equipped with comprehensive safety sensors monitoring tube position, doors, reagent levels, and cooling water flow.
The VELP patented steam generator operates without pressure for safe conditions.

• Rapid pre-heating
• High performance and resistance
• Maintenance-free
• Works with deionized water

Intuitive Software and Data Management

7" color touch screen and user-friendly software guide the operator step-by-step.

• User management (3 authorization levels, GLP compliant)
• Real-time graph and automatic result calculation
• Onboard archive and instrument statistics
• Distillation in series for faster data entry
• Data export (.xls, .txt, .csv) and LIMS compatibility
• Optional barcode technology for data management
• Optional 21 CFR Part 11 compliance for regulated industries

Streamlined Processes with VELP Ermes Cloud Platform

Wi-Fi or LAN connectivity enables access to VELP Ermes Cloud, allowing remote monitoring and control of analyses.

• Manage instruments, consumables, workflows, and data remotely
• Real-time event and alarm notifications
• Remote analysis interruption capability
• Controlled access and secure data sharing
• Enhanced service support and diagnostics

TEMS™ Technology

VELP UDK Series Kjeldahl units integrate TEMS™ benefits for unmatched efficiency.

• Time Saving: Rapid heating minimizes idle time
• Energy Saving: Reduced energy consumption lowers CO₂ emissions
• Money Saving: Cost efficiency per analysis
• Space Saving: Compact footprint saves bench space

Technical Data

Brochures & Leaflets

Explore product brochures for detailed features and specifications.

• UDK Series Automatic Kjeldahl Distillation Systems - Brochure [EN]
• Analytical Instruments - Line Brochure [EN]
• Product Portfolio - Brochure [EN]
• Valuable Information On Kjeldahl Method

Comparison Tables

Compare VELP products side-by-side to find the ideal solution.

• VELP Distillation Units Comparison Table
• VELP Test Tubes Comparison Table

Application Notes

Comprehensive library of application notes to optimize instrument performance.

Examples include:

• Alcohol Determination in Beer
• Casein Determination in Milk - Kjeldahl Method
• Nitrogen/Protein Determination in Pasta
• Total Nitrogen Determination in Urea – Dumas vs Kjeldahl Method

(More application notes available on VELP website.)

Certifications

VELP Scientifica products comply with international safety standards.

• CE mark: compliance with European safety directives

• CB Certificate: IECEE international safety test recognition

• cNEMKOus mark: compliance with IEC/EN 61010-1 for US and Canada

• CE Declaration of Conformity

• UK Declaration of Conformity

• CB Certificate

• cNEMKOus Certificate

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