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Automated Kjeldahl System

UDK 169 with AutoKjel Autosampler – Automatic Kjeldahl Nitrogen Protein Analyzer
Fully automatic distillation and titration for Kjeldahl protein determination, Non-Protein Nitrogen (NPN),
volatiles and more. Connection to autosampler for high sample throughput, maximum flexibility and unattended operation.

Safety, efficiency and precision for high-throughput laboratories

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

  • The fully automatic process ensures efficient operations, distillation and titration performed simultaneously  
  • Shortest time-to-results with online titration and automatic results calculation 
  • Premium result accuracy and precision thanks to the integrated colorimetric titrator with high precision burette
  • Programmable boric acid, water, sodium hydroxide addition
  • Selectable steam generation output level 10% – 100%
  • Auto removal of residues from titrator & sample tube
  • Clear and intuitive operations thanks to the Smart User Interface and digital display
  • Maximum safety for the operator 
  • Unmatched flexibility with a wide accessory range 

Maximum Productivity with Autokjel

UDK 169 used in combination with the AutoKjel autosampler, for a highly productive system is capable of autonomously processing up to 24 samples with standard test tubes (250 ml) or 21 Jumbo test tubes (400 ml).

Sample tubes are taken from the carousel and fed directly into UDK 169 for further processing and reliable results, allowing the user to operate in complete safety and with extreme ease, without requiring an attendant.

The UDK 169 & AutoKjel Kjeldahl analyzer is developed for continuous operation, providing the maximum sample throughput and data processing automation.

Premium accuracy and precision

The automatic Kjeldahl analyzer UDK 159 colorimetric titrator guarantees accuracy, precision, and a long lifetime. 

With a limit of detection (LOD) of 0.015 mgN and a limit of quantification (LOQ) of 0.04 mgN, UDK 159 is perfect even for challenging analyses with samples containing a low amount of Nitrogen.

The system relies on a colorimetric measurement of a chemical reaction with automatic endpoint detection.

VELP colorimetric titrator benefits:

  • Completely automatic procedure
  • Calibration-free
  • Maintenance-free

The UDK 159 allows to constantly monitor the titration with the real-time graph displayed on the instruments.

Unrivalled technologies to support your laboratory - Titanium Condenser and Technopolymer Splash Head

The UDK 159 features the unique VELP patented titanium condenser designed for efficient thermal exchange and low water consumption.

The distillate temperature is always kept below the Kjeldahl threshold value (35 °C), as indicated in the Kjeldahl method, without nitrogen loss.

  • Reduced water consumption
  • High resistance material with prolonged lifespan
  • Reduced break risks during routine cleaning

The exclusive VELP Technopolymer Splash Head incorporated in the UDK 159 is designed for high throughput providing state-of-the-art durability and resistance.

  • Chemical resistant materials
  • Unmatched lifespan of up to 10,000 analyses
  • Maintenance-free and no risk of breaking

Reliability and safety for your lab

The UDK 159 is provided with the most complete set of safety features to ensure maximum operator safety. Sensors monitor tube in place, safety doors, reagent levels, cooling water flow-rate and more.

The VELP Patented Steam Generator guarantees safe working conditions working without pressure:

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

Intuitive software ensuring ease-of-use and data management at its best

The bright 7″ color touch screen and easy-to-use software guide the operator step-by-step.
  • Users’ management with 3 levels of authorizations and permissions according to GLP
  • Real-time graph
  • Automatic result calculation and onboard archive
  • Analysis and instruments statistics
  • Distillation in series feature to speed up data entry
  • Data export in .xls, .txt, .csv and maximum compatibility for LIMS

The optional barcode technology simplifies distillation data management and results calculation.

The UDK 159 software can be upgraded with the optional 21 CFR Part 11 Package for Pharmaceutical, Cosmetic and Food industry laboratories that require compliance with FDA regulation.

Streamlined processes and enhanced service support with VELP Ermes Cloud Platform

UDK 159 features the unique connection option via Wi-Fi or LAN to VELP Ermes Cloud Platform, the Smart Lab solution allowing you to reduce routine operations thanks to the real-time monitoring of your Kjeldahl analysis wherever you are, at any time. 

Just by using a PC, a Smartphone or a Tablet you can manage multiple instruments, consumables, workflows, analysis data, and instrument working conditions.

Immediate event and alarm notifications inform you about analyses and the remote analysis interruption guarantees total control of your laboratory processes. 

Grant access to instruments and data only to specific people in your organization and decide whether you like to share information directly with VELP or with authorized service centers to benefit from a reduced diagnostic time and enhanced service support. 

Nitrogen determination at high throughput gets to a new level with VELP Ermes Cloud Platform.

TEMS™ Technology

Save Time, Energy, Money and Space

UDK Series Kjeldahl distillation units work with the innovative TEMS™ benefits, for unmatched savings.

Time Saving: rapid heating reduces wasted time
Energy Saving: limited energy consumption thus cutting CO2 emissions
Money Saving: cost reduction for each analysis
Space Saving: the narrow footprint saves valuable laboratory bench space

Technical Specifications

Webinars

VELP 30-MINUTE WEBTALK: N/PROTEIN DETERMINATION IN WHOLE MILK

HOW TO OPTIMIZE TOTAL KJELDAHL NITROGEN DETERMINATION IN WATER AND WASTEWATER

HOW TO DETERMINE NITROGEN AND PROTEIN WITH THE DUMAS AND KJELDAHL METHODS: THE CASE OF NITROGEN FRACTIONS IN MILK

Highlights

ADVANCED ANALYTICAL SOLUTIONS FOR PROTEIN AND FAT DETERMINATION IN FISHMEAL SAMPLES

DUMAS AND KJELDAHL METHOD COMPARISON: PROTEIN DETERMINATION IN FEED

Alcoholic strength in beer

DISCOVER HOW TO PREPARE THE VRECEIVER: THE CONVENIENT BORIC ACID IN BAGS

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