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邻氯苯酚标准溶液,95-57-8,analytical standard,1000ug/ml in methanol
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镓标准溶液,7440-55-3,analytical standard ,1000ug/ml in 1mol/L HCl
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硝酸盐氮标准溶液
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化学耗氧量(COD)-铬法标准溶液
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亚硝酸盐标准溶液,100mg/L in water
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间苯二酚标准溶液,108-46-3,analytical standard,1000ug/ml in methanol
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3-氨基联苯标准溶液,2243-47-2,1000ug/ml in Ethyl Acetate
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水中硝酸盐氮成分分析标准物质,100μg/ml ±2% (20℃)
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水中硝酸盐氮成分分析标准物质,1000μg/ml ±1% (20℃)
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铒标准溶液,10138-41-7,1000ug/ml in 10% HCl
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