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NDA 701 Dumas Nitrogen Analyzer

Versatile and cloud-enabled elemental analyzer for Nitrogen and Protein determination according to the Dumas combustion method.

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The perfect solution to maximize your productivity

NDA 701 Dumas elemental analyzer is the best solution for high throughput lab looking for a fast and safe analyzer.

The NDA 701 is powered by the DUMASoft^TM software and produces N/Protein results in just 3 to 4 minutes totally unsupervised and cloud-enabled.

NDA 701 is dramatically faster, easier, and safer than a traditional Kjeldahl system.

The NDA 701 is a safe analyzer that does not require aggressive chemicals or time-consuming analysis steps, just prepare your sample and walk away!

Versatile analyzer for solid and liquid samples

With the NDA 701 you can load different matrix of solid, semi-solid and liquid samples at the same time.

VELP NDA 701 elemental analyzer is designed to work 24/7, 365 days a year with fast and easy routine maintenance.

The autosampler is supplied with a disc of 30 positions and can be expanded in order to accommodate up to 117 samples.

The low LOD limit of detection of 0.003 mgN and the RSD lower than 0.5% (EDTA) assure you high precision results and excellent reproducibility.

Efficiency for your lab

NDA 701 analyzes samples of up to 1 g and reduces operating costs thanks to VELP engineering and genuine consumables with extended lifetime.

The NDA 701 LoGAS^TM TCD works with no reference gas ensuring accuracy and precision;
Very low oxygen consumption thanks to optimized combustion;
The maintenance-free DriStep^TM water trap is a physical trap that removes 99% of water, reducing the cost of chemicals;
NDA 701 is easy to install and is extremely compact saving valuable bench space in your lab

VELP TEMS technology drastically reduces wastes compared to wet chemistry N/protein determination methods.

Nitrogen Analyzer Working Principle

The Dumas method starts with the combustion of the sample which takes place inside the VELP combustion furnace (CF) at a temperature higher than 1000°C to obtain elemental compounds.

Water separation is performed in 2 steps in the NDA 701. The first is the maintenance-free physical trap DriStep™ (WT1) strategically placed after combustion and the second is a chemical trap (WT2) that ensures the complete elimination of residual 1% of water.

Between the two traps, the flow of gases passes through the reduction furnace (RF) where NO_X compounds are transformed into molecular nitrogen N₂.

Afterward, the CO₂ is trapped by the unique self-regenerating VELP CO₂ adsorbers.

At this point, elemental nitrogen is detected by the innovative thermal conductivity detector TCD LoGas™ which will send the data to DumaSoft^TM to calculate the amount of Nitrogen and Protein.

DUMASoft™ Intuitive Operations

We have designed the NDA 701 to ensure maximum ease of use with DUMASoft^TM's intuitive User Interface. Control the status of the instrument for the main window, at a glance.

Setting up an analysis is extremely simple. The database and real-time graph are easily accessible and with the connection to a balance the preparing a test is even faster.

The DUMASoft^TMcontains an extensive library of preinstalled methods, multilingual support and reporting functions with export to .csv, LIMS e.xls format.

Create and manage calibration curves, assign a name and always be ready to use the most suitable one.

Run the complete Leak Test and choose whether to run it on the whole circuit or targeted by zone, after replacing a consumable for example.

Adding value to automation via the cloud

NDA 701 thanks to its connectivity to VELP Ermes allows you to reduce routine operations thanks to the real-time monitoring of your elemental analyzer wherever you are, at any time.

NDA 701 is designed for continuous work with fully automated processes, VELP Ermes allows you to manage multiple instruments, consumables, workflows and to drastically reduce diagnostic time to ensure a superior level of service with maximum data security and protection of your data.

Immediate notifications and alerts will allow you to be always informed about the status of your analysis and thanks to the remote interruption you will have total control of your processes ensuring maximum security.

Access the database of your instrument in total security through the VELP Ermes platform and work with your colleagues creating and sharing reports from PC, smartphone and tablet.

TEMS™ Technology

Save Time, Energy, Money and Space

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Specific Accessories for High Flexibility

NDA 701 is equipped with numerous accessories designed to simplify the operation.
A specific device simplifies the sample preparation for liquids; spatulas and syringes ensure correct transfer of the sample into the capsules.
VELP Scientifica main consumables ensure premium performance, as both the analyzer and the consumables come from the same source.

TECHNICAL DATA

Method of analysis:	Nitrogen determination according to Dumas method (combustion)
Duration of analysis:	3/4 minutes
Detector:	Innovative TCD autocalibrating
Sample weight:	max 1g
Autosampler capacity:	up to 4 discs, 30 positions each
Reproducibility (RSD):	< 0.5% for EDTA standards (9.57%N)
Recovery:	> 99.5%
Detection limit:	0.003 mg nitrogen
Helium (He):	purity 99.999% (grade 5.0)
Oxygen (O2):	purity 99.999% (grade 5.0)
Compressed air or Nitrogen (N2):	purity 99.6 % (oil and water free)
Helium (He) pressure:	2 bar
Oxygen (O2) pressure:	2 bar
Connectivity	Cloud via LAN or Wi-Fi
Interfaces:	USB; RS232
Power:	1400 W
Power supply:	230 V / 50 - 60 Hz
Weight:	54 kg / 119 lb
Dimensions (WxHxD):	655x510x410 mm (H 690 mm with autosampler) 25.8x20.1x16.1 in (H 27.0 in with autosampler)

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.

NDA Series - How to connect to VELP ErmesImprove your laboratory experience with secure VELP Ermes Cloud Platform and access to your VELP instruments working conditions and data anytime and anywhere. VELP Ermes creates a connected ecosystem of devices, people and data that transmit information between each other cutting down distances and expanding your scientific potential.

NDA Series Nitrogen/Protein Analyzer - BrochureLearn more about our range of Dumas Nitrogen/Protein Analyzer, able to perform precise nitrogen analysis and protein determination in a flash and with an unmatched LOD.

Valuable Information On Dumas MethodLearn more about the Dumas principle, first described by Jean-Baptiste Dumas over a century and a half ago (1831).

Analytical Instruments - Line BrochureVELP Scientifica invites you to download line brochure to explore our premium quality solutions.

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 DeterminationDiscover more about the nutritional properties of barley and how to determine n/protein and fiber to optimize livestock operations. Download the e-book with results on BIPEA proficiency testing sample.

E-book - Kjeldahl and Dumas Method Comparison: N/Protein Determination in FeedDiscover more about the Kjeldahl and Dumas methods for the determination of n/protein in various feed samples, a key parameter concerning quality control and protein declaration. Download the e-book with results on BIPEA proficiency testing samples and a comprehensive comparison of the two techniques.

N/Protein Determination in Barley - Dumas vs Kjeldahl MethodProtein 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

N/Protein Determination in Beer - Dumas/Combustion methodMonitoring of the protein content during the brewing process is important to ensure the survival, growth, and productivity of the yeast used to convert sugars to ethanol and carbon dioxide.
Learn how to obtain excellent performance with NDA Series and how to work in accordance with AOAC.

N/Protein Determination In Cereals - Dumas Combustion MethodCereal products are one of the most important staple foods of people and have been so for thousands of years. Discover how to determine the nitrogen content with NDA 701

N/Protein Determination in Dried Soils - Dumas Combustion MethodLearn how to determine nitrogen in solis. The nitrogen in plants is a part of numerous compounds, including proteins, enzymes, nucleic acids, chlorophyll and vitamins essential for all biological functions.

N/Protein Determination in Feed - Dumas/Combustion methodProtein is a critical nutrient in cattle, pigs, poultry, sheep, horses and pet food diets. The protein requirements of cattle vary with age, size, and expected performance. Learn how to obtain excellent performance with NDA Series and how to work in accordance with AOAC.

N/Protein Determination in Fishmeal - Dumas and Kjeldahl method comparisonFishmeal is an important food used in animal husbandry and in aquaculture. It is also the main ingredient of the commonly marketed feed for aquarium fish. Discover more on the results obtained with the Kjeldahl and the Dumas Method for the determination of protein content in fishmeal.

N/Protein Determination in Liquid Fertilizers - Dumas vs Kjeldahl MethodA fertilizer is any type of organic or inorganic substance that contains nutrients, macroelements or microelements, in forms assailable by plants, to maintain or increase the content of these elements in the soil, improve the quality of the substrate at the nutritional level, stimulate the vegetative growth of the plants, etc.

N/Protein Determination in Malt - Dumas/Combustion methodThe monitoring of the protein content during the brewing process is important to ensure the survival, growth, and productivity of yeast. Moreover, the protein content is an important criteria in evaluating the quality of beer: water-soluble barley proteins play a major role in the formation, stability, and texture of head foams. Learn how to obtain excellent performance with NDA Series and how to work in accordance with AOAC.

N/Protein Determination in Meat - Dumas/Combustion methodIt is always more important to know the ingredients and amount of all the components, as proteins, for different reasons, including legal and nutritional purposes (labeling). Learn how to obtain excellent performance with NDA Series and how to work in accordance with AOAC.

N/Protein Determination in Milk Powder - Dumas/Combustion methodMilk powder is an excellent sources of protein and calcium, with a very long shelf life. It does not need to be refrigerated, due to its low moisture content. Learn how to obtain excellent performance with NDA Series and how to work in accordance with ISO.

N/Protein Determination in Nuts - Dumas/Combustion methodNuts are an excellent source of protein and healthy fats, the amounts vary depending on the type of nut. Discover how to determine the N quantity in Nuts with Dumas Combustion method.

N/Protein Determination in Plants - Dumas/Combustion methodNitrogen is the most important nutritional element for plants, since it is involved in building of their proteins, nucleic acids and other several cell components. Learn how to obtain excellent performance with NDA Seriesand how to work in accordance with AOAC, AACC and ICC.

N/Protein Determination in Probiotic Drinks - Dumas/Combustion method (NDA 701)A probiotic is a live microbial food ingredient that beneficially affects the host through its effects in the intestinal tract. They are widely used to prepare fermented dairy products. Learn how to obtain excellent performance with NDA 701 and how to work in accordance with ISO.

N/Protein Determination in Rapeseed - Dumas vs Kjeldahl MethodRapeseed meal, called canola meal in North America, Australia and some other countries, is a high protein-containing material that can be used as a feed for livestock and poultry. Typical meal contains a little less than 40% of protein; however it also contains about 12% of crude fiber.

N/Protein Determination in Sausage - Dumas/Combustion MethodLearn how to determine the protein content in mortadella sausage. Quality control of Mortadella encloses the check of chemical parameters, among these, the protein content. The mortadella proteins are of high biological value.

N/Protein Determination in Soybean - Dumas methodSoybean meal is the most important protein source used to feed farm animals. It represents two-thirds of the total world output of protein feedstuffs. Learn how to obtain excellent performance with NDA Series and how to work in accordance with AOAC.

N/Protein Determination in Starch - Dumas/Combustion methodThe protein content in starch is an important parameter for the refining process, but also from a healthy point of view for people who has allergies and intolerance. Learn how to obtain excellent performance with NDA Series and how to work in accordance with AOAC.

N/Protein Determination in Tomato Sauce - Dumas combustion methodDownload the application note on tomato sauce performed with the NDA 701 with the Dumas combustion method

N/Protein Determination in Vaccines - Dumas methodAntigens are substances, often a protein, that stimulate the body to produce an immune response to protect itself against attacks from future actual disease exposure.

N/Protein Determination in Yogurt - Dumas/Combustion methodThe fermentation in yogurt determines the formation of particular compounds responsible the sensory profile of the product: for this reason, it becomes important to know the amount of key nutrients of milk and of the finished product, such as proteins.
Learn how to obtain excellent performance with NDA Series and how to work in accordance with ISO.

Nitrogen Determination in Cellulose Nitrate - Dumas/Combustion methodThe determination of nitrogen content in cellulose nitrate is important to distinguish high nitrogen content substances, which are used as explosive, from the ones containing a medium or low amount of nitrogen, ideal for the preparation of jellies explosive and smokeless powders. Learn how to obtain excellent performance with NDA Series and how to work in accordance with STANAG.

Nitrogen Determination in Soil - Dumas/Combustion methodNitrogen fertilization is one of the most important factors of agricultural production. The quantity of nitrogen in the soil must be kept under control to prevent an excessive use.
Learn how to obtain excellent performance with NDA Series and how to work in accordance with AOAC and ISO.

Nitrogen Determination in Tyre Rubber - Dumas/Combustion methodFor tyre manufacturers, it is important to know the nitrogen content present in the constituent mixture, since a high amount of nitrogen adversely affects the performance of the tyre, increasing the incidence of premature failure. Learn how to obtain excellent performance with NDA Series and how to work in accordance with ISO.

NPN and NCN Determination in Milk Find out how to perform NPN and NCN determination in milk according to the Dumas combustion method.

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 Nitrogen AnalyzersWith 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.