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DK 42/26 Digestion Unit

Name: DK 42/26 Digestion Unit
Brand: Velp Scientifica
SKU: F30100360
Availability: InStock

Kjeldahl Digestion Units with 42-position aluminum heating block that offers an excellent thermal homogeneity for micro-kjeldahl applications.

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Thermal homogeneity and precision

The DK 42/26 Series digestion unit with aluminum heating block ensures high thermal homogeneity heating up to 450 °C. The temperature of the block is constantly controlled by a microprocessor and is extremely stable, homogeneous and precise: ±0.5°C at all selectable temperatures.

The DK 42/26 Series guarantees accuracy and repeatability. The DK 42/26 performs batch digestion of up to 42 samples with 100 ml test tubes - Ø 26 mm, reducing the energy consumption (-13% compared to the previous series). Low energy consumption provides lower costs of analysis and limits CO2 release.

Easy-to-use with the intuitive digital interface

The bright digital display provides maximum visibility and easy-to-read information.

The instrument is operated with 4 keys to navigate the menu options and program the digestions in a simple and fast way.

Through the intuitive graphic display it is possible to set up to 20 methods with 4 temperature ramps.

Acoustic signals inform the operator of the completion of the analysis facilitating the daily use of the digester.

The inclination of the front panel protects it from chemical spillage at high temperatures.

Fume Neutralization System

For applications where the digestion process produces fumes, acid gases or corrosive substances, the instrument is strongly recommended to be completed with a dedicated accessory:

KS 1000 Scrubberneutralizes all the fumes

TEMS™ Technology

DK Series Kjeldahl digestion units work with the innovative TEMS™ benefits, for huge 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

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Genuine consumables for your digestions

Choosing the right consumables allow the optimization of analytical operations to achieve the highest possible performance of your Digestion Unit. We strongly recommend the use of VELP original consumables in order to be sure to obtain the best performance form your VELP instrument.

The addition of a suitable catalyst, along with high temperature, have influence on the speed and the efficiency of the mineralization in Kjeldahl analysis. Achieving the highest level of performance in a wide range of Kjeldahl applications is now possible with VELP Scientifica genuine KjTabs™ catalyst and antifoaming tablets.

VELP Scientifica Nitrogen Free Weighing Boats are the perfect solution to all the difficult transfer operations of powders or syrupy samples into mineralization test tubes.

TECHNICAL DATA

Construction material:	Epoxy painted with chemical resistant coating
Temperature range:	Ambient to 450 °C / 842 °F
Stability of the heating block temperature:	± 0,5 °C
Precision of the heating block temperature:	± 0,5 °C
Set temperature:	Digital readout in °C or °F
Temperature Calibration:	Automatic
Selectable ramps:	up to 4 per program
Digestion time range:	1 to 999 minutes
Time selection:	1 minute steps
Countdown:	Digital readout
Selectable language:	EN, IT
Heating Places	42-position
Size of tubes	100 ml test tubes (Ø 26 mm)
Power:	2300 W
Dimensions (WxHxD): (aluminum block only)	330x140x510 mm 13.0x5.5x20.1 in
Dimensions (WxHxD):	330x690x510 mm 13.0x17.2x20.1 in
Weight:	18 kg (39.7 lb)

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.

DK Series Kjeldahl Digestion Units - Brochure

Learn more about our efficient and reliable Kjeldahl Digesters, with aluminum heating block offering excellent thermal homogeneity.

Analytical Instruments - Line Brochure [EN]

VELP Scientifica invites you to download line brochure to explore our premium quality solutions.

Product Portfolio - Brochure [EN]

VELP Scientifica invites you to download product portfolio brochure to explore our premium quality solutions.

Valuable Information On Kjeldahl Method

Learn more about the Kjeldahl principle, first described by Johan Kjeldahl over a century ago (1883).

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 Test Tubes Comparison Table

An overview of test tubes available at VELP to find the perfect product for your applications.

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

Discover 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 Feed

Discover 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.

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 Fishmeal - Dumas and Kjeldahl method comparison

Fishmeal 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 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.

N/Protein Determination in Milk Powder - Kjeldahl method

Milk 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 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.

N/Protein Determination in Probiotic Drinks - Kjeldahl method

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 DK / DKL and UDK Series and how to work in accordance with AOAC and ISO.

N/Protein Determination in Soybean - Kjeldahl method

Soybean 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 method

The 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.

Total Dietary Fiber in Corn Flakes

Dietary 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.

Whey Protein Determination in Milk

In 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 Digestion System and Hydrolysis

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.

Service offering

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INSTALLATION

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TECHNICAL SUPPORT

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TRAINING COURSES

CALIBRATION & CERTIFICATION

WARRANTY

FAQ

Check technical sheets with answers to most frequently asked questions

What do we have to add to the test tube to perform the digestion step?

To properly perform the digestion step, it is necessary to prepare the glass test tube with the sample and:

1. KjTabs™ catalyst tablets to accelerate the digestion
2. Antifoam tables (especially recommended in the case of samples with a high-fat content)
3. 12 - 15 ml of concentrated sulfuric acid (98%)

How to insert the sample into the test tube?

The sample must be weighed within Nitrogen free weighing boats (CM0486000) and then placed inside the test tubes. In so doing there is no risk of part of the sample sticking to the test tube parts and the digestion therefore not being performed correctly.

Which kind of test tubes does VELP supply?

VELP provides a full set of test tubes. Download here the comparison table!

For which applications should Micro-Kjeldahl tubes be used?

The Micro Kjeldahl tubes can be used if the compound is homogeneous and small samples are fully representative, or if it is specified by an approved method (AOAC method 960.52, Microchemical determination of Nitrogen). Note that the Micro-Kjeldahl method requires smaller volumes of chemical reagents.

Micro Kjeldahl units are also used to perform the step of nitrogen content determination during the dietary fiber extraction process.

DK 42/26 Digestion Unit

Thermal homogeneity and precision

Easy-to-use with the intuitive digital interface

Fume Neutralization System

TEMS™ Technology

Models

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Genuine consumables for your digestions

Adapter for probe Ø3mm for DK/DKL/ECO

IQ/OQ DK Manual

KjTabs VCM - 1000 pcs/box

KjTabs VCT - 1000 pcs/box

KjTabs VKPC - 1000 pcs/box

KjTabs VS Antifoam - 1000 pcs/box

KjTabs VST - 1000 pcs/box

KjTabs VTCT - 1000 pcs/box

KjTabs VW - 1000 pcs/box

Sample rack for DKL42/26-DK42/26

Stand for DKL20-DK20-DKL42/26-DK42/26

Suction cap and drip tray DKL42/26-DK42/26

Support system DK20-DK42/26

Test tubes Ø26x300 mm, 100 ml 6pcs/box

Weighing boats 58x10x10 mm, 100 pcs/box

Weighing boats 70x23x15 mm, 100 pcs/box