-
γ-六六六标准溶液,58-89-9,analytical standard,100ug/ml in methanol
-
水中硝酸根成分分析标准物质,500μg/ml ±1% (20℃)
-
水中氨氮成分分析标准物质,100μg/ml ±2% (20℃)
-
水中氨氮成分分析标准物质,500μg/ml ±1% (20℃)
-
邻二甲苯标准溶液,95-47-6,analytical standard,1000ug/ml in carbon disulfide
-
邻氯苯酚标准溶液,95-57-8,analytical standard,1000ug/ml in methanol
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对硝基乙苯标准溶液,612-22-6,analytical standard,1000ug/ml in methanol
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磷酸根离子标准溶液,7558-79-4,1000μg/ml in Water (20℃)
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水中硫酸根成分分析标准物质,1000μg/ml ±1% (20℃)
-
水中硫酸根成分分析标准物质,100μg/ml ±2% (20℃)
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