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硝酸根离子(NO₃-)标准溶液,100ug/ml in Water (20℃)
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硝酸盐氮标准溶液,100μg/ml in Water (20℃)
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四氯化碳标准溶液,56-23-5,analytical standard,1000ug/ml in methanol
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间二甲苯标准溶液,108-38-3,analytical standard,1000ug/ml in methanol
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苯标准溶液,71-43-2,analytical standard,1000ug/ml in carbon disulfide
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正十六烷标准溶液,544-76-3,analytical standard,1000ug/ml in methanol
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水中硝酸根成分分析标准物质,500μg/ml ±1% (20℃)
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砷标准溶液,7440-38-2,analytical standard, 100mg/L in H2SO4
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锰标准溶液,7439-96-5,analytical standard ,1000ug/ml in 1.0 mol/L HNO3
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1,2-二氯苯标准溶液,95-50-1,analytical standard,1000ug/ml in methanol
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