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Specifications and Purity

Merck’s reagents and chemicals are renowned for their outstanding quality. Every step in our supply chain is subject to the most stringent controls and fully documented to give you complete confidence in your analysis.

Outstanding Purity

Decades of experience with highly pure chemicals, combined with state-of-the-art production and filling plants, ensure that what you order is what you receive. We only use high-quality raw materials and manufacture under strictly controlled conditions using Merck’s advanced methodology. This results in outstanding chemical purity and extremely low limiting values which makes our products the ideal choice for reliable qualitative and quantitative analyses.

Quality Control

All our inorganic reagents and solvents are tested and certified in our own state-of-the-art quality control laboratories under the guidance of highly qualified specialists. EMPARTA® and EMPLURA® grade products are tested at a lab close to their production site. EMSURE® grade products are quality-controlled at our Merck KGaA, Darmstadt, Germany site.

During testing, we always adhere to international standards and legal requirements and use the latest developments in technology and methods. So you can firmly rely on Merck’s analytical competence. 


Due to their outstanding batch-to-batch consistency, you can expect the same excellent quality each time you use Merck products. This not only ensures reproducible results, but also saves you the costs and complications of repeat analyses.

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Acetone for analysis EMSURE®
ACE, ISO, Reag. Ph Eur 
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Hydrochlorid acid fuming 37% for analysis EMSURE®
ACE, ISO, Reag. Ph Eur  
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Unrivalled Specifications

Merck:/Freestyle/LE-Lab-Essentials/Learning Center/Inorganic/LE-Empower Specifications-03152016.jpg Our reagents and solvents often offer additional specifications beyond those required by international guidelines such as ISO, ACS and Reag. Ph Eur. Many of our products are measured for up to 70 parameters! Furthermore, thanks to our proven quality management system, we are able to continuously improve our specifications.


The differences in our quality grades are clearly shown in their individual specifications. Regardless of the grade you choose, you will always receive a product of excellent quality that’s perfectly suited to your application.

Merck:/Freestyle/LE-Lab-Essentials/Learning Center/Inorganic/LE-EMPLURA Application Grafic-03212016.jpgEMSURE® products combine maximum specifications with minimum impurities. Their Certificates of Analysis provide an extended impurity profile for each batch, and detailed batch values for each specification parameter. This avoids misinterpretation of results, and gives you greater control of your analysis, especially when developing new methods 

Dedicated Service

For Merck, quality encompasses more than product purity and consistency. It also means service that exceeds expectations – whether you require regulatory support, application advice, or a specific product.

Related Resources

Empower your Lab        EMSURE®, EMPARTA®, EMPLURA®
Compliance and Documentation
Pharmaceutical Analysis
Packaging and Safe Handling

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