Certified reference material of determination of oxygen absorption for identifying tendency of coal to spontaneous combustion
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Certified reference material of determination of oxygen absorption for identifying tendency of coal to spontaneous combustion
GBW11164 | 每瓶50g
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Certified reference material of determination of oxygen absorption for identifying tendency of coal to spontaneous combustion
GBW11166 | 每瓶50g
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Certified Reference Materials for the Determination of Caking Index of bituminous coal
GBW12020 | /
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Certified Reference Materials for the Determination of Caking Index of bituminous coal
GBW12022 | /
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Certified Reference Materials for the Determination of Caking Index of bituminous coal
GBW12023 | /
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Certified Reference Materials for the Chemical Composition of Coal Ash
GBW(E)110099 | 10g/瓶
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Certified Reference Materials for the Chemical Composition of Coal Ash
GBW(E)110100 | 10g/瓶
使用注意事项：称完样品后应立即盖紧容器盖，避免标准物质氧化和水分的显著变化。 煤样的空气干燥基水分应与吸氧量同时测定。如不能同时测定，应在尽可能短的、水分未发生显著变化的期限内测定，最多不超过5天。
特征形态：固态
定值单位：煤炭科学技术研究院有限公司
规格：每瓶50g
定级证书量值信息：
保存条件：标准物质应始终置于密闭的容器中，保存在阴凉干燥处。
研制单位名称：煤炭科学技术研究院有限公司北京分公司
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