The certified reference standards for ion chromatography guarantee ease of use and precise and reliable analytical results. Wide range of single-element and multi-element standards designed for the specific needs of different ion chromatography applications. The equivalent standards of the main manufacturers are also available: Thermo / Dionex and Metrohm. The manufacturers' quality system is ISO 9001 certified and ISO 17034 and ISO / IEC 17025 accredited.