SGS United KingdomCounty Durham, GBScope: "...BS EN ISO 2811 ISO 2811-1 KES Determination of Gloss Value ISO 2813 KES Determin..."UKAS1certView
SOCOTEC UKMiddlesex, GBScope: "...S EN ISO 2808:2019; BS EN ISO 2811-1:2023 Lab Determination of gloss value at 20..."UKAS1certView