proficiency testing and certification – DRRR

proficiency testing

proficiency testing and certification – DRRR


As part of our ongoing commitment to quality, Impact have recently completed a proficiency testing exercise run by the “Deutsches Referenzburo fur Ringversuche und Referenzmaterialien” (DRRR).  The proficiency programmes, run by the DRRR, test a lab’s ability by providing reference materials to a range of different laboratories around the world.

Labs then submit their results to the DRRR who report performance of the different labs on the same material.  Labs can then see how closely their results correlate to the mean result, and how their standard deviation compares to other laboratories running the same test.

Impact undertook proficiency testing in both Tensile testing to ISO 527-1 and ISO 527-2, and to Lightfastness testing under Xenon Arc to ISO 4892-2, including grayscale assessment.  In both tests we scored top marks with Z scores below 2 and a rating of ‘great success’.


DRRR proficiency


proficiency testing


Our results in modulus testing (ISO 527-1/-2) were fantastic, with a Z score of 0.02, putting us almost dead on the mean result of the 8 participating labs as shown below.


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We also scored superbly on lightfastness after accelerated weathering to ISO 4892-2 scoring a Z score of -0.34, which was equal top with 4 other laboratories.  This shows the skill of our technicians along with the reliability and repeatability of our range of Q-Lab weatherometers.


Screen Shot 2017-10-06 at 14.40.34


Impact will continue to undertake further proficiency testing to ensure we can offer quality and reliable results to our client base.  When looking for testing you should always ask laboratories about their quality programmes and proficiency testing results to ensure you are getting the most reliable data possible.


If you would like further information on our testing capabilities, click here. Alternatively, email info@impact-solutions.co.uk or call us on +44 (0) 1324 489182.

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