VELP UDK 159 Automatic Kjeldahl Nitrogen Protein Analyzer

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

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

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 DATA

STRUCTURE	Corrosion-resistant technopolymer
DISPLAY	7" color touch screen
TITRATION GRAPH	Yes
ANALYSIS TIME	From 4 minutes (including titration)
MEASURING RANGE	0.04 - 220 mg N
REPRODUCIBILITY (RSD)	≤ 1 %
RECOVERY	≥ 99.5 %
DETECTION LIMIT (LOD)	> 0.015 mg N
SODIUM HYDROXIDE ADDITION	Automatic
WATER ADDITION	Automatic
BORIC ACID ADDITION	Automatic
DISTILLATION RESIDUES REMOVAL	Automatic
TITRATION RESIDUES REMOVAL	Automatic
TITRATION VESSEL CLEANING	Automatic
STEAM FLOW REGULATION	10 - 100 %
DELAY TIME (DEVARDA ALLOY ANALYSIS)	00 sec - 99 min 59 sec
DISTILLATION IN SERIES	Yes
WATER CONSUMPTION	From 0,5 L / min to 15°C From 1 L / min to 30°C
LANGUAGE SELECTION	Yes
PROTOCOL LIBRARY	32 standard methods + 24 customizable
USER MANAGEMENT	Yes
ARCHIVE (ON-BOARD DATA STORAGE)	Yes
21 CFR PART 11 COMPLIANCE	Yes, accessory
CONNECTIVITY	2 x USB (balance, barcode scanner, mouse, printer, pen drive); Ethernet (Pc, Ermes)
POWER INPUT	2200 W
DIMENSIONS (WXHXD)	385x780x416 mm 15.2x30.7x16.4 in
WEIGHT	31 kg 68.3 lb
ERMES CONNECTION	Yes, via Wi-Fi or LAN

Brochures & Leaflets

VELP Scientifica invites you to download brochures and leaflets in order to explore our premium quality solutions and to have all the major key arguments, features and specifications of a product in your hands, in any place, and at any time.

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

Comparison tables

Select the category of products you are interested in and this tool will give you an easy overview of what is available at VELP in order to find the product that is perfect for you. These comparison tables provide a brief description with side by side features from basic equipment to the most advanced analytical solutions.

VELP Distillation Units Comparison Table
VELP Test Tubes Comparison Table

Application notes

Choose among a comprehensive library of Application Notes / White Papers and learn more on how to optimize the performance of your VELP instruments. These documents offer typical analyses of well-known samples, together with official references and suggestions, to make you an expert!

E-book - Barley and Feed: N/Protein Determination and Fiber Determination
E-book - Kjeldahl and Dumas Method Comparison: N/Protein Determination in Feed
Alcohol Determination in Beer
Alcoholic Strenght in Spirit Drinks
Alcoholic Strength in Cream liqueur
Alcoholic Strength in Wine
Casein Determination in Milk - Kjeldahl method
Characterisation of different nitrogen forms in liquid fertilizers
Determination of Low Sulphur Dioxide content according to modified Monier-Williams method
N/Ammonia Determination in Fertilizers - Kjeldahl Method
N/Ammonia Determination in Water - Kjeldahl Method
N/Protein Determination in Barley - Dumas vs Kjeldahl Method
N/Protein Determination in Cereals - Kjeldahl method
N/Protein Determination in Cheese - Kjeldahl method
N/Protein Determination in Feed - Kjeldahl method
N/Protein Determination in Fishmeal - Dumas and Kjeldahl method comparison
N/Protein Determination in Liquid Fertilizers - Dumas vs Kjeldahl Method
N/Protein Determination in Meat - Kjeldahl method
N/Protein Determination in Milk - Kjeldahl method
N/Protein Determination in Milk Powder - Kjeldahl method
N/Protein Determination in Nuts - Kjeldahl method
N/Protein Determination in Probiotic Drinks - Kjeldahl method
N/Protein Determination in Rapeseed - Dumas vs Kjeldahl Method
N/Protein Determination in Soybean - Kjeldahl method
Nitrogen and Protein Determination in Commercial Whole Liquid Milk - Dumas vs Kjeldahl Method
Nitrogen and Protein Determination in Insect Flour: Kjeldahl and Dumas comparison
Nitrogen Determination in Engine Oil - Kjeldahl method
Nitrogen/Protein Determination in Pasta
Phenols Determination in Drinking Water and Industrial Wastes
Sulphites Determination in Dried Apricots
TKN Determination in Water and Wastewater
Total Nitrogen determination in Urea – Dumas vs Kjeldahl Method
TVBN Determination in Fish (UDK 129)
Whey Protein Determination in Milk

Certifications

Our compliance to statutory rules and regulations worldwide.
With the CE mark, VELP Scientifica declares that the products are designed and manufactured in compliance with the essential safety requirements of the European Directive on Safety.
The Certification Body (CB) Certificate is an international program created by the IECEE for the acceptance of product safety test results among participating laboratories and certification organizations around the world.
The cNEMKOus mark ensures this product is designed and manufactured in compliance with the International Directive on Safety IEC/EN 61010-1. The cNEMKOus mark has the same legal status as any other NRTL/SCC accredited marks, for U.S. and Canada.

CE Declaration of Conformity VELP Scientifica UDK Kjeldahl Distillation Units & AutoKjel
UK Declaration of Conformity VELP Scientifica UDK Kjeldahl Distillation Units & AutoKjel
CB Certificate VELP Scientifica UDK Kjeldahl Distillation Units & AutoKjel
cNEMKOus VELP Scientifica UDK Kjeldahl Distillation Units & AutoKjel