DKL Series Automatic Kjeldahl Digestion Units

Fully Automatic Kjeldahl Digestion Units for nitrogen analysis and protein determination that incorporate the revolutionary TEMS™ technology for unprecedented Savings in terms of Time, Energy – as much as 35%, Money and Space.

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High Technology

Microprocessor control of precise block temperature
Real time display of process steps
54 programs (30 pre-installed, 24 customizable)

Automated Operation

Calibration automatic for top precision & repeatability
No hands lowering and lifting of test tubes
Auto separation of manifold from the rack

Outstanding Reliability

Aluminum block for absolute temperature homogeneity
Unmatched conductivity for fast response up to 450 °C
Conforms to Good Laboratory Practice standard
Premium quality consumables

Practical Functionality

LCD display for immediate understanding
Up to 6 languages available from a wide selection
All necessary items supplied in one package
Very small footprint

Optimized Selection

Choice of models for different workloads
DKL 8 (8-position with 250 ml tubes, Ø 42 mm)
DKL 12 (12-position with 250/400 ml tubes, Ø 42 mm)
DKL 20 (20-position with 250/400 ml tubes, Ø 42 mm)
DKL 42/26 (42-position with 100 ml tubes, Ø 26 mm)
Incorporates TEMS™ technology*
*Saving Time, Energy, Money & Space

Recommendations

For application where the digestion process produces fumes, acid gases or corrosive substances, the below specific accessories are strongly recommended:

JP Pump aspirates noxious fumes
SMS Scrubber neutralizes all the fumes (for safety)
Two JP Pumps are recommended when using DKL 42/26

Special Application: DKL 20 can be used also for testing Chemical Oxygen Demand
Its lift automatically manages all the glass required for processing 20 samples simultaneously

Video

DKL Series, simply impressive
Watch DKL Series in action and realize how impressive it is. DKL Series is the most efficient Automatic Kjeldahl Digester, combining high performance, such as rapid heating, with energy saving features. The aluminum block ensures excellent temperature homogeneity between different positions.

Product Code

Description	Power Supply	Code
DKL 8	230 V / 50-60 Hz	S30100200
DKL 8	115 V / 50-60 Hz	S30110200
DKL 12	230 V / 50-60 Hz	S30100190
DKL 12	115 V / 50-60 Hz	S30110190
DKL 20	230 V / 50-60 Hz	S30100210
DKL 42/26	230 V / 50-60 Hz	S30100180

Including



LiftDKL 8: A00000170 DKL 12: A00000176 DKL 20: A00000167 DKL 42/26: A00000167	Suction cap and drip trayDKL 8: A00000175 DKL 12: A00000174 DKL 20: A00000169 DKL 42/26: A00000179	Sample rackDKL 8: A00000173 DKL 12: A00000172 DKL 20: A00000168 DKL 42/26: A00000180	Test tubes Ø 42×300 mm, 250 mlDKL 8, DKL 12 and DKL 20: A00000144 (3pcs/box)	Test tubes Ø 26×300 mm, 100 mlDKL 42/26: A00000146 (6pcs/box)

Accessories



A00000173DKL 8 Sample rack	A00000172DKL 12 Sample rack, 250 ml tubes	A00000168DKL 20 Sample rack	A00000180DKL 42/26 Sample rack	A00000175DKL 8 Suction cap and drip tray



A00000174DKL 12 Suction cap and drip tray	A00000169DKL 20 Suction cap and drip tray	A00000179DKL 42/26 Suction cap and drip tray	A00000184DKL 8 Stand for sample rack	A00000183DKL 12 Stand for sample rack



A00000182DKL 20 Stand for sample rack	A00000182DKL 42/26 Stand for sample rack	A00000144DKL 8, DKL 12, DKL 20 Test tubes Ø 42×300 mm, 250 ml (3pcs/box)	A00000146DKL 42/26 Test tubes Ø 26×300 mm, 100 ml (6pcs/box)	A00000185DKL 12, DKL 20 Test tube Ø 50×300 mm, 400 ml



A00000181DKL 12 Sample rack for test tubes 400 ml	A00000246DKL 20 Sample rack for test tubes 400 ml	A00000243DKL 8, 12, 20 Glass cap	A00000237DKL 20 Sample rack for COD analysis	A00000145DKL 20 Test tubes Ø42x200mm, 200 ml with cone NS 29/32 (3pcs/box) for COD analysis



A00001041DKL 20 Air condenser with ground cone for COD analysis	A00001045DKL 20 Antisplash bell for COD analysis	A00001042DKL 20 PTFE sheaths for 29/32 cones for COD analysis	40002309USB cable A/B 1,8mt	A00000362Adapter for probe Ø3mm for DK/DKL/ECO



A00000186IQ/OQ Manual	A00000274KjTabs VCM – 1000 pcs/box	A00000275KjTabs VKPC – 1000 pcs/box	A00000276KjTabs VCT – 1000 pcs/box	A00000277KjTabs VST – 1000 pcs/box



A00000281KjTabs VTCT – 1000 pcs/box	A00000282KjTabs VW – 1000 pcs/box	A00000283KjTabs VS Antifoam – 1000 pcs/box

GENERAL FEATURES
Construction material:	Stainless steel with chemical resistant coating
Models:	DKL 8 8-position for 250 ml test tubes (Ø 42 mm) DKL 12 12-position for 250/400 ml test tubes (Ø 42 mm) DKL 20 20-position for 250 ml test tubes (Ø 42 mm) DKL 42/26 42-position for 100 ml test tubes (Ø 26 mm)
Set temperature:	Digital readout in °C or °F or K
Countdown:	Digital readout
Selectable language:	UK, I, E, F, RUS, CN + Additional Customizable (downloadable)
Power:	DKL 8 1150 W DKL 12 1500 W DKL 20 2300 W DKL 42/26 2300 W
Weight:	DKL 8 19.7 kg (43.5 lb) DKL 12 23.3 kg (51.4 lb) DKL 20 30.8 kg (68.0 lb) DKL 42/26 33.5 kg (74.0 lb)
Dimensions (WxHxD):	DKL 8 210x690x540 mm (8.3×27.2×21.3 in) DKL 12 266x690x540 mm (10.5×27.2×21.3 in) DKL 20 322x690x584 mm (12.7×27.2×23.0 in) DKL 42/26 322x690x584 mm (12.7×27.2×23.0 in)

PERFORMANCE
Temperature range:	Ambient to 450 °C / 842 °F
Temperature Calibration:	Automatic
Stability of the heating block temperature:	± 0,5 °C
Precision of the heating block temperature:	± 0,5 °C
Digestion time range:	1 to 999 minutes
Time selection:	1 minute steps
Program library:	54 methods: 30 pre-installed + 24 user-programmable
Selectable ramps:	4 ramps per program

SAFETY
Overtemperature:	Thermostat
Damaged temperature probe:	Automatic detection and alarm message
Lift movement:	Visual/acustic signal
Hot surface:	Visual signal (if T>50 °C)

Kjeldahl Digestion Units – Unparalleled Productivity

The DKL Series Automated Kjeldahl Digestion Units provide users with the ultimate technology whose objective is to simplify operation, ensuring significant savings. Once set up, the operator can just press the START button and walk away.

All regular functions are fully automated, including lowering the test tubes into the heating block, lifting the tubes to expedite cooling and separating the suction manifold from the tube rack, enabling the rack to be slid out and replaced by another to start the next run.

Ease of loading and unloading make the VELP DKL a pleasure to use when carrying out Kjeldahl analysis, and there is no need to handle the sample when the tubes are hot!

Kjeldahl Digestion Units – Aluminum Block for Premium Performance

DKL Series heating block is entirely made in aluminum alloy, the best material when temperature precision, stability and homogeneity are required.

Even in terms of repeatability and conductivity, aluminum offers incredibly high performance!

In accordance with GLP, the analyst must be able to determine at what temperature digestion occurred: just by using a common temperature probe, the analyst can measure the effective temperature.

And do not forget DKL capabilities in reducing the heating time…

Kjeldahl Digestion Units – TEMS™ Technology

The automatic DKL Kjeldahl digestion units work with the innovative TEMS™ benefits, for huge savings.

Time Saving: from Ambient to 420 °C in only 22 minutes
Energy Saving: up to – 35% of consumption
Money Saving: huge cost reduction for each analysis
Space Saving: reduce unnecessary use of space

Kjeldahl Digestion Units – High Heating Speed on DKL

The graph shows that rapid heating of DKL Kjeldahl digestion units: by increasing the heating speed, the analysis time is reduced!

All the advantages of a rapid heating combined with the known benefits of a block digester: excellent reliability, high precision and homogeneity of the temperature, with the possibility to know the real temperature of the digestion.

Kjeldahl Digestion Units – Low Energy Consumption on DKL

Look at the significant amount of energy that you can save with a DKL Kjeldahl digestion units compared to a conventional digester. DKL Series reduces dramatically consumption and CO2 emission. In a world where respect for the environment is increasingly important, VELP shows exceptional qualities, providing a significant contribution to this topic cutting any form of pollution. Perform more analyses or use other instruments to increase your business…without any additional cost!

Kjeldahl Digestion Units – Space Saving with DKL

Everybody knows that there is never enough bench space in a laboratory, this is why we have made the DKL series as compact as possible. The narrow footprint enables you to optimize bench space according to need: fit more instruments on the same lab bench or make different use of the extra space available.

Kjeldahl Digestion Units – Clear Communication at a Glance on DKL

Enjoy the simplicity of the DKL’s display. Extremely bright, easy to read and practical with all the most important parameters available at a single glance. Current temperature and ramp settings are clearly viewed on the display. In this way the user can monitor every stage of analysis as well as selecting options such as language (including ideograms).
Improved communication leads to improved efficiency.

Kjeldahl Digestion Units – Automatic Digestion Unit for COD Analysis

DKL Series is really versatile!

Particularly, DKL 20 can be used for also for COD (Chemical Oxygen Demand): its lift can automatically manage all the glass required for the COD analysis for processing twenty samples simultaneously.

Just few dedicated accessories are required for testing COD analysis: A00000237, A00000145, A00001041, A00001045 and A00001042.

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.

VELP_Food&Feed_Solutions

Discover our premium solutions and food analyzers ideal for research centers and companies for N/Protein Determination (Kjeldahl and Dumas), Solvent Extrac…

DKL BROCHURE

Learn more about our fully automatic Kjeldahl digestion units that incorporate the revolutionary TEMS™ technology for unprecedented savings.

Valuable Information on kjeldahl method

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

VELP Food Feed Line CN

Discover our premium solutions and food analyzers ideal for research centers and companies for N/Protein Determination (Kjeldahl and Dumas), Solvent Extrac -Chinese

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!

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 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

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 liquid fertilizers dumas vs kjeldah method

A 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 meat kjeldahl method

Meat 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 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 dumascombustion method

Nuts 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 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 rapeseed dumas vs kjeldahl method

Rapeseed 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 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.

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.

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 Automatic Digestion Units

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.

CB Certificate VELP Scientifica Pumps

The 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 dkl kjeldahl digestion units

The cNEMKOus mark ensures this product is designed and manufactured in compliance with the International Directive on Safety IEC/EN 61010-1

cNemkous Certificate of Compliance pump

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.