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p, p’-DDD标准溶液,72-54-8,analytical standard,100ug/ml in methanol
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二苯胺,122-39-4,分析标准品
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根皮苷,二水,7061-54-3,分析标准品,≥99%
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间氯苯酚标准溶液,108-43-0,analytical standard,1000ug/ml in methanol
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甲酸根离子标准溶液,1mg/ml in water
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间甲酚标准溶液,108-39-4,analytical standard,0.98mg/ml in methanol
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4-溴联苯,92-66-0,分析标准品
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间甲酚,108-39-4,分析标准品
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屈标准溶液,218-01-9,analytical standard,3.58ug/ml in methanol
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氯甲烷标准溶液,74-87-3,100mg/L,溶于吹扫-捕集甲醇溶液中
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