UNE-EN ISO 11890-2:2021

This document is one of a series of standards dealing with the sampling and testing of coating materialsand their raw materials.It specifies a method for the determination of the volatile organic compounds (VOC) content and thesemi-volatile organic compounds (SVOC) content of coating materials and their raw materials.This part is applicable for the determination of VOC and SVOC if the expected VOC and/or SVOC contentis greater than 0,01 % by mass up to 100% by mass.If the VOC content is greater than 15 % by mass, the less complicated method given in ISO 11890-1may be used. If the system contains VOC and SVOC, the VOC result of ISO 11890-1 may be influenced bySVOC. In this case ISO 11890-2 shall be preferred. For VOC content smaller than 0,1 %, the head spacemethod described in ISO 17895 can be used as an alternative. ISO 11890-1 and ISO 17895 cannot beused for the determination of the SVOC content.NOTE 1 Some ingredients of coating materials and their raw materials can decompose during analysis andcause artificial VOC and SVOC signals. When determining VOC and SVOC for coating materials and their rawmaterials, these signals are artefacts of the method and should not be taken into account (examples are given inAnnex B).This method assumes that the volatile matter is either water or organic. However, other volatileinorganic compounds can be present and might need to be quantified by another suitable method andallowed for in the calculations. The method defined in this standard is not applicable for determinationof water content.NOTE 2 If organic acids or bases and their corresponding salts are present in the coating material or its rawmaterials, the amount that is quantified by this method may not be accurate due to a change in the acid or baseequilibrium.