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Dr Ehrenstorfer CoAs (Certificates of Analysis)


At LGC Standards, we provide comprehensive Certificates of Analysis (CoAs) for every reference material in our Dr Ehrenstorfer portfolio, letting laboratory professionals see the quality, composition, and traceability of our products at a glance.

Each CoA is developed in line with ISO 17034 and ISO 17025 specifications, providing robust validation and method transparency. Thanks to this clear methodology, your analytical results will remain compliant and reproducible.

To download a Dr Ehrenstorfer CoA, simply log in to your LGC Standards account, navigate to the relevant product page, and select the appropriate batch or product listing to access the downloadable CoA.

Interested in finding out more about the Dr Ehrenstorfer range? Navigate to our portfolio of Dr Ehrenstorfer products, where you can log in or create an account to view pricing and place orders online. Should you have specific requirements, it’s easy to request a custom quotation.

Leave nothing to chance


At Dr Ehrenstorfer, a Certificate of Analysis isn't just a piece of paper – it's a guarantee that the reference material you buy is a completely known quantity. Our ISO 17034 CoAs give customers the highest level of clarity and the most detailed information possible, providing complete confidence in the accuracy of your results and the assurance that nothing has been left to chance.

Be certain about uncertainty

 

Some manufacturers only provide a number for characterisation uncertainty, but our 17034 Dr Ehrenstorfer CoAs meet ISO requirements precisely - by stating a metrologically validated, total combined uncertainty that's traceable to SI units. We also verify the homogeneity uncertainty of our products using ISO 17034-validated procedures - while our manufacturing uncertainty takes into account neat material purity and human error as well as weight and volume. 

The science behind our promises

 

The expiry dates on our CoAs are based on extensive real-time data studies and heat stress testing, using NIST techniques that feature multiple temperatures. We also ensure, through stress-testing and data and trend analysis, that shipping our products has zero impact on our certified uncertainty values.

The Truth About Certificates of Analysis - Video

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