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UDK 129 Kjeldahl Distillation Unit

Entry-level Kjeldahl distillation unit for your analyses concerning different applications such as determining ammoniacal nitrogen, protein determination, nitrogen content (Kjeldahl or direct alkaline distillation), nitric nitrogen (after reduction/Devarda), phenols, volatile acids, cyanides and alcohol content.

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Entry-level Kjeldahl Distillation Unit

The Kjeldahl distillation unit UDK 129 runs automatically, after setting sodium hydroxide addition and distillation time using the LCD display in order to get reliable and accurate results. The high-precision pumps ensure constant accurate dosing of reagents and the cooling water is automatically stopped during pauses, thus cutting down on its consumption.

UDK 129 includes many features that ensure efficient and reliable distillation, far beyond expectations of an ordinary entry level unit.

The UDK 129 Distillation Unit ensures the highest safety standards to provide maximum protection to the operator: the use of an innovative system allows the insertion of the test tube in complete safety and the use of test tubes of various sizes.

Exclusive Titanium Condenser

VELP Scientifica has developed and patented the innovative titanium condenser able to ensure high performance and considerable water savings (from 0.5 l/min at 15 °C - 1 l/min at 30 °C) with minimal maintenance.

The titanium condenser ensures that distillate temperature always remains below the safe threshold value (35 °C), as indicated in the Kjeldahl method, without Nitrogen loss.

Patented Steam Generator

The patented steam generator used by UDK Kjeldahl Distillation Units offers unique performance, being a patented solution.

A thermostat ensures the correct functioning of the steam generator, a safety thermostat eliminates risks for the operator and guarantee safe working conditions.

The high level of precision and accuracy ensures correct and detailed results without any leaks even after intensive use.

Rapid (p)re-heating time
Total safety: no internal pressure
Low thermal dispersion
Great repeatability
High performance and resistance
Maintenance-free
Safety-thermostat
Works with deionized water

TEMS™ Technology

Save Time, Energy, Money and Space

Models

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Vreceiver™ boric acid with indicator sealed bags

VELP unique Vreceiver™ is a certified formula composed of Boric Acid powder and a mixture of indicators mentioned by AOAC methods (Bromocresol Green and Methyl red) allowing fast and standardized receiving solution preparation for colorimetric titration.

The receiving solution is prepared in a few minutes facilitating the day by day operations instead of the typical time consuming process using single reagents. The result is a reliable and standardized solution for colorimetric titration.

TECHNICAL DATA

Structure:	Corrosion-resistant technopolymer
Display:	LCD
Delay time (Devarda Alloy Analysis)	0 – 99 min
Distillation time:	5 minutes to collect 100 ml of distillate
Sodium hydroxide addition:	automatic
Sodium hydroxide volume:	0 - 100 ml
Tap water consumption:	from 0,5 l/min at 15°C – from 1 l/min at 30°C
Protocol library:	1 customizable method
Reproducibility (RSD):	≤ 1 %
Recovery:	≥ 99.5 % at nitrogen levels between 1 and 200 mg N
Detection Limit:	≥ 0.1 mg N
Power:	2100 W (1700 W at 115V)
Weight:	25 kg / 55 lb
Dimensions (WxHxD):	385x780x416 mm (15.2x30.7x16.4 in)

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 - BrochureLearn more about our distillation units, used mainly for nitrogen and protein determination according to Kjeldahl method, but ideal also for many other applications.

Valuable Information On Kjeldahl MethodLearn 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!

Alcoholic Strength in Cream liqueurDownload the Application Note on the alcoholic strength determination with VELP UDK Distillation Units.

E-book - Barley and Feed: N/Protein Determination and Fiber DeterminationDiscover more on 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.

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.

Alcohol Determination in BeerFind out how to perform the alcohol determination in beer.

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.

Alcoholic Strength in WineThe 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 Series. Learn how to obtain excellent performance with UDK Series and how to work in accordance with OIV.

Casein Determination in Milk - Kjeldahl methodCasein 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/Ammonia Determination in Fertilizers - Kjeldahl MethodHealthy plants often contain 3 to 4 percent nitrogen in their above-ground tissues. This is a much higher concentration compared to other nutrients. Nitrogen is so vital because it is a major component of chlorophyll, the compound by which plants use sunlight energy to produce sugars from water and carbon dioxide (i.e., photosynthesis).

N/Ammonia Determination in Water - Kjeldahl MethodWater is the most important resource on Earth, for humans and other living organisms alike. Despite this, nearly half of the world’s population does not have access to drinking water of acceptable standard. Groundwater is usually a good source of drinking water since water is naturally purified when it is slowly percolating through soil.

N/Protein Determination in Cereals - Kjeldahl methodCereals 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 methodDue 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 methodProtein 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 Meat - Kjeldahl methodMeat proteins have an high nutritional value and they also affect the quality of the finished product,influencing some properties as well as water retention, emulsifying capability and the softness of the dough. 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 methodThe 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.

N/Protein Determination in Milk Powder - Kjeldahl methodMilk powders contain all twenty-one standard amino acids, the building blocks of proteins, and are high in soluble vitamins and minerals. Compared to liquid milk, this product has a far longer shelf life and does not need to be refrigerated, due to its low moisture content.
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 Nuts - Kjeldahl methodNuts 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.

N/Protein Determination in Probiotic Drinks - Kjeldahl methodA 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 DK / DKL and UDK Series and how to work in accordance with AOAC and ISO.

N/Protein Determination in Soybean - Kjeldahl 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 DK / DKL and UDK Series and how to work in accordance with AOAC.

Nitrogen Determination in Engine Oil - Kjeldahl methodThe nitrogen content in lubricating oils must be low to prevent deposits and reduce the risk of damage: for this reason, nitrogen is considered as one of the quality control parameters of crude oil, lubricants and fuel oils. Learn how to obtain excellent performance with DK / DKL and UDK Series and how to work in accordance with ASTM.

Nitrogen Determination in Water & Sludge - Kjeldahl methodThe 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.

Nitrogen/Protein Determination in PastaLearn more about the Nitrogen/protein determination in pasta performed with the VELP UDK and DKL Kjeldahl Analyzers.

Phenols Determination in Drinking Water and Industrial WastesThe determination of phenols is one of the routine analysis in order to assess the quality in drinking and ground water and in domestic and industrial wastes, even at low concentration. Learn how to obtain excellent performance with UDK Series and how to work in accordance with CNR and ISO.

Sulphites Determination in Dried ApricotsSulphites, in various forms, have been added to foods as preservatives agents and for other purposes for centuries. Their use became an issue of concern when some sensitive individuals exhibited adverse reactions. Learn how to obtain excellent performance with UDK Series and how to work in accordance with AOAC.

Total Dietary Fiber in Corn FlakesDietary fiber is not digested from human stomach and it represent a crucial nutrient in human diet for its ability to enhance satiety, to regulate intestinal functions and to modulate the nutrients absorption. Learn how to obtain excellent performance with GDE, CSF6 and Micro-Kjeldahl apparatus and how to work in accordance with AOAC 985.29.

TVBN Determination in Fish (UDK 129)TVBN (Total Volatile Basic Nitrogen) is a method of an alysis that quantifies the presence of nitrogenous compounds (ammonia and dimethyl and trimethyl amine) in fish from the sea or from river, revealing the degree of freshness. Learn how to obtain excellent performance with UDK 129 and how to work in accordance with Conway and Byrne method.

Whey Protein Determination in MilkIn order to determine soluble whey proteins (WP), it is necessary to know the amount of milk total nitrogen (Ntot), non-casein nitrogen (NCN) and non-proteins nitrogen substances (NPN).
Learn how to obtain excellent performance with DK / DKL and UDK Series and how to work in accordance with AOAC and ISO.

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 Distillation SystemsWith 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.

CB Certificate VELP Scientifica UDK Kjeldahl Distillation Units & AutoKjelThe 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.

cNEMKOus VELP Scientifica UDK Kjeldahl Distillation Units & AutoKjelThe 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.

UDK 129 Kjeldahl Distillation Unit

Entry-level Kjeldahl Distillation Unit

Exclusive Titanium Condenser

Patented Steam Generator