DIN 52980 E:2020 Draft Document - Photocatalytic activity of surfaces - Determination of photocatalytic activity of surfaces in an aqueous medium by degradation of methylene blue
2021DIN 52980:2021 Photocatalytic activity of surfaces - Determination of photocatalytic activity of surfaces in an aqueous medium by degradation of methylene blue
1970DIN 52980 E:2020-11 Photocatalytic activity of surfaces - Determination of photocatalytic activity of surfaces in an aqueous medium by degradation of methylene blue
2020DIN 52980 E:2020 Draft Document - Photocatalytic activity of surfaces - Determination of photocatalytic activity of surfaces in an aqueous medium by degradation of methylene blue
2008DIN 52980:2008 Photocatalytic activity of surfaces - Determination of photocatalytic activity by degradation of methylene blue