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硝酸根离子(NO₃-)标准溶液,500ug/ml in Water (20℃)
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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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钡标准溶液,7440-39-3,analytical standard,1000ug/ml in 1.0 mol/L HNO3
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苯胺标准溶液,62-53-3,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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硒标准溶液,7782-49-2,analytical standard ,1000ug/ml in 2.0mol/L HNO3
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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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正十六烷标准溶液,544-76-3,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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