1. Home
  2. Dumas Nitrogen/Protein Analyzers
 

velp Dumas Nitrogen/Protein Analyzers

NDA is the innovative VELP Scientifica solution for nitrogen/protein determination according to the Dumas combustion method for testing both solid and liquid samples.

Overview Download
  • The most accurate & sensitive nitrogen & protein determination technique
  • Instantaneous results – no long delays
  • Environmentally friendly – no chemicals used, less residues & waste
  • Conformity with multiple standards protocols
    AOAC, ISO, AACC, AOCS, ASBC etc.

  • Dumas analysis method
    - Starts with a combustion stage to burn the sample. Obtains elemental compounds
    - Water is removed by a first physical trap (DriStep™), positioned after the combustion
    - Then by a second chemical trap
    - Between the two, the elemental substances pass through a reduction furnace
    - The auto-regenerative CO2 adsorbers let pass only the elemental nitrogen that is detected by the LoGas™ innovative Thermal Conductivity Detector (TCD) with no requirement for a reference gas

  • VELP also offers consumables to improve the performance of the analyzer

Brochure & Leaflet

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 - Chinese Brochure
Learn more about our distillation units, used mainly for nitrogen and protein determination according to Kjeldahl method, but ideal also for many other applications....
VELP Scientifica FOOD & FEED Line
Discover our premium solutions and food analyzers ideal for research centers and companies for N/Protein Determination (Kjeldahl and Dumas), Solvent Extraction (Soxhlet, Randall), Fiber Analysis (Weende, Van Soest) and other parameters on food, feed and beverages....
UDK Series Automatic Kjeldahl Distillation Systems - Brochure
Learn more about our distillation units, used mainly for nitrogen and protein determination according to Kjeldahl method, but ideal also for many other applications....
UDK 169 Automatic Kjeldahl Analyzer with AutoKjel Autosampler - Leaflet
Learn more about our fully automatic Kjeldahl Analyzer (distillation unit plus integrated colorimetric titrator, AOAC recommended), with patented steam generator and titanium condenser. Can be connected to autosampler, for high sample throughput, maximum flexibility and unattended operation....
UDK 159 Automatic Kjeldahl Analyzer - Leaflet
Learn more about our fully automatic Kjeldahl Analyzer (distillation unit plus integrated colorimetric titrator, AOAC recommended), with patented steam generator and titanium condenser....
UDK 149 Automatic Kjeldahl Distillation Unit - Leaflet
Learn more about our fully automatic Kjeldahl distillation unit with patented steam generator and titanium condenser, connectable to external potentiometric titrator of the major brands....
UDK 139 Semi-Automatic Kjeldahl Distillation Unit - Leaflet
Learn more about our semi-automatic Kjeldahl distillation unit with patented steam generator and titanium condenser.
UDK 129 Kjeldahl Distillation Unit - Leaflet
Learn more about our entry-level Kjeldahl distillation unit with patented steam generator and titanium condenser.
Valuable Information On Kjeldahl Method
Learn more about the Kjeldahl principle, first described by Johan Kjeldahl over a century ago (1883).

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!

N/Protein Determination in Barley - Dumas vs Kjeldahl Method
Protein content of malting barley is important because it affects malting, brewing, and their end products. Discover more on the results obtained with Kjeldahl and Dumas Method...
Nitrogen/Protein Determination in Pasta
Learn more about the Nitrogen/protein determination in pasta performed with the VELP UDK and DKL Kjeldahl Analyzers.
Alcoholic Strenght in Spirit Drinks
The ethylic alcohol, produced during the fermentation, determines the alcoholic strength and it can be measured by volume with our UDK. Learn how to obtain excellent performance with UDK 129....
N/Protein Determination in Nuts - Kjeldahl method
Nuts are an excellent source of protein and healthy fats; their amounts vary depending on the type of nut.
Peanuts, for example, provide a good source of B vitamins essential for energy, protein metabolism, and the synthesis of red blood cells and their protein content is about 29%.
Learn how to obtain excellent performance with DK / DKL and UDK Series and how to work in accordance with AOAC....
Nitrogen Determination in Water & Sludge - Kjeldahl method
The properties of water, waste water and sludge vary considerably depending upon their source. For example, in unpolluted waters, low nitrogen levels make it necessary to use large sample volumes. Learn how to obtain excellent performance with DK / DKL and UDK Series and how to work in accordance with AOAC, EPA and ISO....
Casein Determination in Milk - Kjeldahl method
Casein proteins are a family of proteins involved in the production of cheese and fermented milk. They are also extremely important nitrogen compounds in the dairy products production, additives in medicine, and have a technical use in cosmetics, paints and adhesives.
Learn how to obtain excellent performance with DK / DKL and UDK Series and how to work in accordance with AOAC and ISO....
N/Protein Determination in Cereals - Kjeldahl method
Cereals contain between 8-15% of different kinds of proteins such as albumins, globulins, prolamines, gliadins, glutelins and glutenins. Their chemical composition is important not only for nutritional purposes, but also for the bread dough and its process of baking and for economical reason. Learn how to obtain excellent performance with DK / DKL and UDK Series and how to work in accordance with AOAC and AACC....
N/Protein Determination in Cheese - Kjeldahl method
Due to the greater demand and consumption of dairy products, protein analysis has become more and more important to ensure food safety, food quality and fairness in international trade. Learn how to obtain excellent performance with DK / DKL and UDK Series, and how to work in accordance with ISO and AOAC....
N/Protein Determination in Feed - Kjeldahl method
Protein is a critical nutrient in cattle, pigs, poultry, sheep, horses and pet food diets. It is required for milk production and reproductive tract reconditioning after calving.
Learn how to obtain excellent performance with DK / DKL and UDK Series and how to work in accordance with AOAC....
N/Protein Determination in Milk - Kjeldahl method
The protein fraction includes caseins (80%) and whey proteins (20%) and it is of interest, not only from the nutritional point of view, but also from a technological one. Milk proteins have particular chemical properties which contribute to create typical sensory features, influencing the whole food processing. Learn how to obtain excellent performance with DK / DKL and UDK Series and how to work in accordance with AOAC and ISO....
22 results page 1 of 3

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
The distillation unit is used to perform protein/nitrogen analysis according to the traditional Kjeldahl method and for many other applications. Choose among the valuable solutions offered by VELP, from entry-level to the most advanced analyzer....

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.

CB Certificate VELP Scientifica UDK Kjeldahl Distillation Units & AutoKjel
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....
CE Declaration of Conformity VELP Scientifica Distillation Systems
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, matching EU consumer safety, health or environmental requirements....
cNEMKOus VELP Scientifica UDK Kjeldahl Distillation Units & AutoKjel
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....

Brochure & Leaflet

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 - Chinese Brochure
Learn more about our distillation units, used mainly for nitrogen and protein determination according to Kjeldahl method, but ideal also for many other applications....
VELP Scientifica FOOD & FEED Line
Discover our premium solutions and food analyzers ideal for research centers and companies for N/Protein Determination (Kjeldahl and Dumas), Solvent Extraction (Soxhlet, Randall), Fiber Analysis (Weende, Van Soest) and other parameters on food, feed and beverages....
UDK Series Automatic Kjeldahl Distillation Systems - Brochure
Learn more about our distillation units, used mainly for nitrogen and protein determination according to Kjeldahl method, but ideal also for many other applications....
UDK 169 Automatic Kjeldahl Analyzer with AutoKjel Autosampler - Leaflet
Learn more about our fully automatic Kjeldahl Analyzer (distillation unit plus integrated colorimetric titrator, AOAC recommended), with patented steam generator and titanium condenser. Can be connected to autosampler, for high sample throughput, maximum flexibility and unattended operation....
UDK 159 Automatic Kjeldahl Analyzer - Leaflet
Learn more about our fully automatic Kjeldahl Analyzer (distillation unit plus integrated colorimetric titrator, AOAC recommended), with patented steam generator and titanium condenser....
UDK 149 Automatic Kjeldahl Distillation Unit - Leaflet
Learn more about our fully automatic Kjeldahl distillation unit with patented steam generator and titanium condenser, connectable to external potentiometric titrator of the major brands....
UDK 139 Semi-Automatic Kjeldahl Distillation Unit - Leaflet
Learn more about our semi-automatic Kjeldahl distillation unit with patented steam generator and titanium condenser.
UDK 129 Kjeldahl Distillation Unit - Leaflet
Learn more about our entry-level Kjeldahl distillation unit with patented steam generator and titanium condenser.
Valuable Information On Kjeldahl Method
Learn more about the Kjeldahl principle, first described by Johan Kjeldahl over a century ago (1883).

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!

N/Protein Determination in Barley - Dumas vs Kjeldahl Method
Protein content of malting barley is important because it affects malting, brewing, and their end products. Discover more on the results obtained with Kjeldahl and Dumas Method...
Nitrogen/Protein Determination in Pasta
Learn more about the Nitrogen/protein determination in pasta performed with the VELP UDK and DKL Kjeldahl Analyzers.
Alcoholic Strenght in Spirit Drinks
The ethylic alcohol, produced during the fermentation, determines the alcoholic strength and it can be measured by volume with our UDK. Learn how to obtain excellent performance with UDK 129....
N/Protein Determination in Nuts - Kjeldahl method
Nuts are an excellent source of protein and healthy fats; their amounts vary depending on the type of nut.
Peanuts, for example, provide a good source of B vitamins essential for energy, protein metabolism, and the synthesis of red blood cells and their protein content is about 29%.
Learn how to obtain excellent performance with DK / DKL and UDK Series and how to work in accordance with AOAC....
Nitrogen Determination in Water & Sludge - Kjeldahl method
The properties of water, waste water and sludge vary considerably depending upon their source. For example, in unpolluted waters, low nitrogen levels make it necessary to use large sample volumes. Learn how to obtain excellent performance with DK / DKL and UDK Series and how to work in accordance with AOAC, EPA and ISO....
Casein Determination in Milk - Kjeldahl method
Casein proteins are a family of proteins involved in the production of cheese and fermented milk. They are also extremely important nitrogen compounds in the dairy products production, additives in medicine, and have a technical use in cosmetics, paints and adhesives.
Learn how to obtain excellent performance with DK / DKL and UDK Series and how to work in accordance with AOAC and ISO....
N/Protein Determination in Cereals - Kjeldahl method
Cereals contain between 8-15% of different kinds of proteins such as albumins, globulins, prolamines, gliadins, glutelins and glutenins. Their chemical composition is important not only for nutritional purposes, but also for the bread dough and its process of baking and for economical reason. Learn how to obtain excellent performance with DK / DKL and UDK Series and how to work in accordance with AOAC and AACC....
N/Protein Determination in Cheese - Kjeldahl method
Due to the greater demand and consumption of dairy products, protein analysis has become more and more important to ensure food safety, food quality and fairness in international trade. Learn how to obtain excellent performance with DK / DKL and UDK Series, and how to work in accordance with ISO and AOAC....
N/Protein Determination in Feed - Kjeldahl method
Protein is a critical nutrient in cattle, pigs, poultry, sheep, horses and pet food diets. It is required for milk production and reproductive tract reconditioning after calving.
Learn how to obtain excellent performance with DK / DKL and UDK Series and how to work in accordance with AOAC....
N/Protein Determination in Milk - Kjeldahl method
The protein fraction includes caseins (80%) and whey proteins (20%) and it is of interest, not only from the nutritional point of view, but also from a technological one. Milk proteins have particular chemical properties which contribute to create typical sensory features, influencing the whole food processing. Learn how to obtain excellent performance with DK / DKL and UDK Series and how to work in accordance with AOAC and ISO....
22 results page 1 of 3

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
The distillation unit is used to perform protein/nitrogen analysis according to the traditional Kjeldahl method and for many other applications. Choose among the valuable solutions offered by VELP, from entry-level to the most advanced analyzer....

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.

CB Certificate VELP Scientifica UDK Kjeldahl Distillation Units & AutoKjel
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....
CE Declaration of Conformity VELP Scientifica Distillation Systems
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, matching EU consumer safety, health or environmental requirements....
cNEMKOus VELP Scientifica UDK Kjeldahl Distillation Units & AutoKjel
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....

Products

NDA 701 Dumas Nitrogen Analyzer

A powerful Dumas Protein/Nitrogen Analyzer, able to perform precise nitrogen analysis and protein determination in a flash. It is the best solution for high productivity and offers unique benefits, being totally unsupervised.
Read more

NDA 702 Dual Carrier Gas Dumas Nitrogen Analyzer

A versatile Dumas Protein/Nitrogen Analyzer, able to perform precise nitrogen analysis and protein determination using either Helium or Argon as carrier gas. Ideal for markets where Helium is scarce, it offers high throughput and precision.
Read more