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First certified reference material for nanoparticle size analysis
Date:2/18/2011

bringing together expert knowledge from across the globe. The material was assessed by different measurement techniques and allows producers of nanoparticles (independent from their final use) to test the size of their particles, including batch-to-batch variability and determine whether or not the particles meet the intended production specifications.

About comparability or measurements

Analytical measurements form the basis for many decisions, not only in a legal sense, but also in industry. Customers set technical specifications and suppliers promise to meet these specifications. With increased international trade, these measurements are usually performed by different laboratories: the supplier tests samples before shipment and the receiver tests them for acceptance. It is crucial that those two measurements are comparable, i.e. that laboratories achieve the same result for their analysis. Otherwise, unnecessary trade disputes emerge or customers refuse to buy from unknown vendors and demand costly testing procedures.

The same applies in the legal arena. Companies must be sure that the results of the official control laboratories are comparable to their own results. Only then can they be sure that compliance with legal limits shown by their own measurements also means compliance for the official control laboratory. Therefore, comparability of measurements is a prerequisite for the unequivocal administration of law for all decisions based on measurements.

There is, however, a third aspect of comparability of results: they must be comparable not only between different laboratories, but also comparable in time for one laboratory. Only if a laboratory is sure that the measurement it carries out today is the same as two years ago, can it make informed decisions. Process improvement relies on such comparisons. Comparability of measurements is therefore a prerequisite for innovation, process improvement and industrial quality con
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Contact: Elena Gonzalez Verdesoto
elena.gonzalez-verdesoto@ec.europa.eu
32-498-986-482
European Commission Joint Research Centre
Source:Eurekalert

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