The applicable standard DIN 61591 contains no defined method for this kind of product. The regulation does not specify this issue explicitly. This is an issue to be considered in the revision of the Regulation or through standardisation.
In the absence standardised methods, manufacturers shall perform measurements and calculations using other reliable accurate and reproducible methods which take into account the generally recognised state-of-the-art and, meeting the technical definitions, conditions, equations and parameters set out in the regulation. This is to be assessed on a case-by-case basis by market surveillance authorities.
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