Among the properties studied, purity is an important parameter to control. Indeed, chromatographic methods, such as gas chromatography (GC) or high performance liquid chromatography (HPLC) are necessary to confirm the purity of the substance. The purity must then be expressed as a percentage.
In addition, significant impurities must also be reported as a percentage. In addition, all types of impurities are taken into account, even isomers and by-products. Thus, the support of an analytical laboratory specialized in purity analysis according to REACH is a considerable asset.