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NCS160136-C20(CAS号50-00-0) 水中甲醛
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甲醛标准溶液,50-00-0,analytical standard,100mg/L,in 5% ethanol
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甲醛水质标样,50-00-0,analytical standard,0.43mg/L in water
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甲醛水质标样,50-00-0,analytical standard,1.41mg/L in water
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呋喃,110-00-9,CP,98%,含0.025% BHT 稳定剂
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四氢-2-呋喃甲醛,7681-84-7,95%(50%w/w in toluene)
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水中亚硝酸根成分分析标准物质,7632-00-0,100μg/ml ±2% (20℃)
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定制配套CEMMars6微波消解仪12位微波罐100ml
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坛墨质检 水中钠(1%盐酸) 50mL
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坛墨质检 水中铋(5%硝酸) 50mL
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