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UDK 159 Automatic Kjeldahl Nitrogen Protein Analyzer

UDK 159 Automatic Kjeldahl Nitrogen Protein Analyzer

Name: UDK 159 Automatic Kjeldahl Nitrogen Protein Analyzer
Brand: Velp Scientifica
SKU: F30200155
Availability: InStock

Fully automatic distillation and titration for Kjeldahl protein determination, Non-Protein Nitrogen (NPN), volatiles and more. Meeting the most demanding requirements in terms of precision, accuracy, and safety.

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Safety, efficiency and precision for high-throughput laboratories

The UDK 159 is designed for high-throughput laboratories looking for precise and reproducible results of Kjeldahl nitrogen TKN, proteins, ammoniacal nitrogen, nitric nitrogen (Devarda), TVBN, sulfites, phenols, volatile acids, cyanides, and alcohol content.

The fully automatic process ensures efficient operations, distillation and titration performed simultaneously
Shortest time-to-results with online titration and automatic results calculation
Premium result accuracy and precision thanks to the integrated colorimetric titrator with high precision burette
Programmable boric acid, water, sodium hydroxide addition
Selectable steam generation output level 10% – 100%
Auto removal of residues from titrator & sample tube
Clear and intuitive operations thanks to the Smart User Interface and digital display
Maximum safety for the operator
Unmatched flexibility with a wide accessory range

Premium accuracy and precision

The automatic Kjeldahl analyzer UDK 159 colorimetric titrator guarantees accuracy, precision, and a long lifetime.

With a limit of detection (LOD) of 0.015 mgN and a limit of quantification (LOQ) of 0.04 mgN, UDK 159 is perfect even for challenging analyses with samples containing a low amount of Nitrogen.

The system relies on a colorimetric measurement of a chemical reaction with automatic endpoint detection.

VELP colorimetric titrator benefits:

Completely automatic procedure
Calibration-free
Maintenance-free

The UDK 159 allows to constantly monitor the titration with the real-time graph displayed on the instruments.

Unrivalled technologies to support your laboratory - Titanium Condenser and Technopolymer Splash Head

The UDK 159 features the unique VELP patented titanium condenser designed for efficient thermal exchange and low water consumption.

The distillate temperature is always kept below the Kjeldahl threshold value (35 °C), as indicated in the Kjeldahl method, without nitrogen loss.

Reduced water consumption
High resistance material with prolonged lifespan
Reduced break risks during routine cleaning

The exclusive VELP Technopolymer Splash Head incorporated in the UDK 159 is designed for high throughput providing state-of-the-art durability and resistance.

Chemical resistant materials
Unmatched lifespan of up to 10,000 analyses
Maintenance-free and no risk of breaking

Reliability and safety for your lab

The UDK 159 is provided with the most complete set of safety features to ensure maximum operator safety. Sensors monitor tube in place, safety doors, reagent levels, cooling water flow-rate and more.

The VELP Patented Steam Generator guarantees safe working conditions working without pressure:

Rapid pre-heating time
High performance and resistance
Maintenance-free
Works with deionized water

Intuitive software ensuring ease-of-use and data management at its best

The bright 7" color touch screen and easy-to-use software guide the operator step-by-step.

Users' management with 3 levels of authorizations and permissions according to GLP
Real-time graph
Automatic result calculation and onboard archive
Analysis and instruments statistics
Distillation in series feature to speed up data entry
Data export in .xls, .txt, .csv and maximum compatibility for LIMS

The optional barcode technology simplifies distillation data management and results calculation.

The UDK 159 software can be upgraded with the optional 21 CFR Part 11 Package for Pharmaceutical, Cosmetic and Food industry laboratories that require compliance with FDA regulation.

Streamlined processes and enhanced service support with VELP Ermes Cloud Platform

UDK 159 features the unique connection option via Wi-Fi or LAN to VELP Ermes Cloud Platform, the Smart Lab solution allowing you to reduce routine operations thanks to the real-time monitoring of your Kjeldahl analysis wherever you are, at any time.

Just by using a PC, a Smartphone or a Tablet you can manage multiple instruments, consumables, workflows, analysis data, and instrument working conditions.

Immediate event and alarm notifications inform you about analyses and the remote analysis interruption guarantees total control of your laboratory processes.

Grant access to instruments and data only to specific people in your organization and decide whether you like to share information directly with VELP or with authorized service centers to benefit from a reduced diagnostic time and enhanced service support.

Nitrogen determination at high throughput gets to a new level with VELP Ermes Cloud Platform.

TEMS™ Technology

Save Time, Energy, Money and Space

UDK Series Kjeldahl distillation units work with the innovative TEMS™ benefits, for unmatched savings.

Time Saving: rapid heating reduces wasted time
Energy Saving: limited energy consumption thus cutting CO_² emissions
Money Saving: cost reduction for each analysis
Space Saving: the narrow footprint saves valuable laboratory bench space

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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.

21 CFR Part 11 Software Package Upgrade

Achieve compliance for 21 CFR Part 11 provisions for nitrogen determination with the dedicated optional Package for UDK 159 or 169 software.

The FDA's Code of Federal Regulations Title 21 Part 11 defines the requirements for using electronic records and electronic signatures on computerized systems. The integrity, reliability, and trustworthiness of electronic records must be fulfilled as for 21 CFR Part 11 basic requirements.

VELP 21 CFR Part 11 Package helps you achieve full compliance with Subpart B - Electronic Records and Subpart C - Electronic Signatures of the regulation.

Barcode technology for smart operations

The optional barcode reader matched with the sample tubes with barcode (Code A00000144) simplifies distillation data management and result calculation.

The barcode on the tubes can be scanned in order to transfer the data automatically for an optimized analysis workflow.

Reduced risk of errors
Automated processes
Maximized efficiency

TECHNICAL DATA

Structure	Corrosion-resistant technopolymer
Display	7" color touch screen
TITRATION GRAPH	Yes
Analysis time	From 4 minutes (including titration)
MEASURING RANGE	0.04 - 220 mg N
Reproducibility (RSD)	≤ 1 %
Recovery	≥ 99.5 %
Detection Limit (LOD)	> 0.015 mg N
Sodium hydroxide addition	Automatic
Water addition	Automatic
Boric acid addition	Automatic
DISTILLATION RESIDUES REMOVAL	Automatic
TITRATION RESIDUES REMOVAL	Automatic
TITRATION VESSEL CLEANING	Automatic
STEAM FLOW REGULATION	10 - 100 %
DELAY TIME (DEVARDA ALLOY ANALYSIS)	00 sec - 99 min 59 sec
DISTILLATION IN SERIES	Yes
WATER CONSUMPTION	From 0,5 L / min to 15°C From 1 L / min to 30°C
LANGUAGE SELECTION	Yes
PROTOCOL LIBRARY	32 standard methods + 24 customizable
USER MANAGEMENT	Yes
ARCHIVE (ON-BOARD DATA STORAGE)	Yes
21 CFR PART 11 COMPLIANCE	Yes, accessory
CONNECTIVITY	2 x USB (balance, barcode scanner, mouse, printer, pen drive); Ethernet (Pc, Ermes)
POWER INPUT	2200 W
DIMENSIONS (WxHxD)	385x780x416 mm 15.2x30.7x16.4 in
WEIGHT	31 kg 68.3 lb
ERMES CONNECTION	Yes, via Wi-Fi or LAN

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 - Brochure [EN]

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

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 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.

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.

Alcohol Determination in Beer

Find 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 Cream liqueur

Download the Application Note on the alcoholic strength determination with VELP UDK Distillation Units.

Alcoholic Strength in Wine

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

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.

Determination of Low Sulphur Dioxide content according to modified Monier-Williams method

Find out how to determine sulphur content by automatic steam distillation followed by iodine titration according to the modified Monier-Williams method.

N/Ammonia Determination in Fertilizers - Kjeldahl Method

Healthy 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 Method

Water 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 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 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 Liquid Fertilizers - Dumas vs Kjeldahl 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 - 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 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 and Protein Determination in Commercial Whole Liquid Milk - Dumas vs Kjeldahl Method

Milk, consumed in many forms, has always been a part of the human diet. Due to the greater demand and consumption of dairy products, protein analysis has become increasingly important to ensure food safety, quality, and fairness in international trade. Learn about the comparison between Dumas and Kjeldahl methods in Nitrogen and protein determination.

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.

Nitrogen/Protein Determination in Pasta

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

Phenols Determination in Drinking Water and Industrial Wastes

The 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 Apricots

Sulphites, in various forms, have been added to foods as preservative 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 the UDK Series.

Total Nitrogen determination in Urea – Dumas vs Kjeldahl Method

Urea is a crystalline substance widely used as a fertilizer, feed supplement, and starting material for plastics and drugs. It has a very high nitrogen content; it is readily converted to nitrate in the soil and is therefore considered one of the most concentrated nitrogenous fertilizers. The importance of having a controlled Nitrogen content in this product is crucial to always keep the same production standards.

TVBN Determination in Fish (UDK 139/149/159/169)

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 139, 149, 159 & 169 and how to work in accordance with Conway and Byrne method.

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 UDK Kjeldahl Distillation Units & AutoKjel

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.

UK Declaration of Conformity VELP Scientifica UDK Kjeldahl Distillation Units & AutoKjel

With the UKCA mark, VELP Scientifica declares that the products are designed and manufactured in compliance with the essential safety requirements of the United Kingdom.

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.

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.

Service offering

Close to our customers: we are committed to supporting you anytime, anywhere

Discover all our services

INSTALLATION

PREVENTIVE MAINTENANCE PLANS

TECHNICAL SUPPORT

ANALYTICAL SUPPORT

TRAINING COURSES

CALIBRATION & CERTIFICATION

WARRANTY

FAQ

Check technical sheets with answers to most frequently asked questions

Which are the different levels of automation across the UDK series?

1. UDK 129: automatic NaOH addition
2. UDK 139: automatic H2O and NaOH addition, automatic tube drainage
3. UDK 149: automatic H2O, NaOH and boric acid (Vreceiver) addition, automatic tube drainage, automatic titration (connection with the external potentiometric titrator)
4. UDK 159: automatic H2O, NaOH and boric acid (Vreceiver) addition, automatic tube drainage, automatic titration (integrated colorimetric titrator)
5. UDK 169: automatic H2O, NaOH and boric acid (Vreceiver) addition, automatic titration (integrated colorimetric titrator), automatic test tubes loading (autosampler)

Which is the best solution to prepare the receiving solution?

To make preparation quick and easy, VELP introduced the innovative Vreceiver for 1L of boric acid with indicators. This is a certified formula consisting of boric acid powder and a mixture of indicators (required by AOAC methods), which allows for optimal preparation of the receiving solution ensuring standardization in preparation and ease of transport and management in the laboratory.

Are the Dumas combustion and the Kjeldahl method giving different results?

The Kjeldahl method gives as a result of the analysis the Total Kjeldahl Nitrogen (TKN), while the Dumas combustion method gives as result the Total Nitrogen (TN).

You can find additional information by clicking here.

Which kind of test tubes does VELP supply?

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

UDK 159 Automatic Kjeldahl Nitrogen Protein Analyzer

Safety, efficiency and precision for high-throughput laboratories

Premium accuracy and precision

Unrivalled technologies to support your laboratory - Titanium Condenser and Technopolymer Splash Head

Reliability and safety for your lab

Intuitive software ensuring ease-of-use and data management at its best

Streamlined processes and enhanced service support with VELP Ermes Cloud Platform

TEMS™ Technology

Models

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Vreceiver™ boric acid with indicator sealed bags

21 CFR Part 11 Software Package Upgrade

Barcode technology for smart operations

21 CFR part 11 package for UDK169-159

Acid pump kit UDK1X9 230V

Adapter USB-RS232

Alcoholic strength kit

Barcode scanner with USB socket

Glass splash head kit UDK

H2O tank for UDK or H20 and residue tank for FIWE Advance

H3BO3 tank with caps (UDK149,159,169)

IQ/OQ/PQ UDK159 Manual

Kjeldahl balloon, 500 ml

NaOH tank with caps (UDK1X9)

PM Kit Full UDK 159 & UDK 169

PM Kit Regular UDK 159 & UDK 169

Printer

Residues tank with caps

Spacer for test tube Ø48x260 mm

Test tube Ø48x260 mm, 300 ml

Test tube Ø50x300 mm, 400 ml

Test tube Ø80x300 mm, 1000ml

Test tubes Ø26x300 mm, 100 ml 6pcs/box

Test tubes Ø42x300 mm, 250 ml 3pcs/box

Tube connection Ø26, Ø48

USB Wi-Fi adapter

User Kit UDK 159 & UDK 169

VELP Ermes 1 year Connection

VELP Ermes 3 years Connection

Vreceiver TKN formula for 1L, 10 pcs/pack

Waterproof mouse

Wireless barcode scanner

TECHNICAL DATA

Brochures & Leaflets

Comparison tables

Application notes

Certifications

Webinars

VELP 30-MINUTE WEBTALK: N/PROTEIN DETERMINATION IN WHOLE MILK

HOW TO OPTIMIZE TOTAL KJELDAHL NITROGEN DETERMINATION IN WATER AND WASTEWATER

HOW TO DETERMINE NITROGEN AND PROTEIN WITH THE DUMAS AND KJELDAHL METHODS: THE CASE OF NITROGEN FRACTIONS IN MILK

Highlights

DUMAS AND KJELDAHL METHOD COMPARISON: PROTEIN DETERMINATION IN FEED

Alcoholic strength in beer

DISCOVER HOW TO PREPARE THE VRECEIVER: THE CONVENIENT BORIC ACID IN BAGS

Industries

Food & Beverage

Feed

Environment

Agriculture

Pharmaceutical and Life Science

Chemical and Petrochemical

Cosmetic