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ONORM EN 13819-3:2024
Hearing protectors - Testing - Part 3: Supplementary acoustic test methods
This document specifies procedures for the sampling of soil improvers and growing media for the subsequent determination of quality and quantity. It lists rules that must be followed when taking samples and ensures that a sufficient quantity is available for analysis. This document applies to material in solid form (including preformed growing media) and in liquid form. This document is intended for manufacturers, purchasers and law enforcement agencies to verify the information regarding these materials. The established procedure is not intended to be used compulsorily for control purposes at the manufacturer. The requirements of this document may differ from national legal requirements regarding the declaration of the materials mentioned.
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