ISO 21079-3:2008 EN 7ff8f772
Chemical analysis of refractories containing alumina, zirconia, and silica — Refractories containing 5 percent to 45 percent of ZrO2 (alternative to the X-ray fluorescence method) — Part 3: Flame atomic absorption spectrophotometry (FAAS) and inductively coupled plasma emission spectrometry (ICP -AES)
现行
发布日期 :
2008-04-01
实施日期 :
ISO 21690:2021 EN fcf82f74
Glass in building — Glass blocks — Specification and test methods
现行
发布日期 :
2021-11-16
实施日期 :
ISO 21736:2020 EN 40a46291
Refractories — Test methods for thermal shock resistance
现行
发布日期 :
2020-10-07
实施日期 :