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p, p’-DDD标准溶液,72-54-8,analytical standard ,50ug/mL in Toluene:Methanol(volume ratio 1:4)
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β-六六六标准溶液,319-85-7,analytical standard,50ug/ml in methanol
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氨 溶液,7664-41-7,0.4 M in 1,4-dioxane
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δ-六六六标准溶液,319-86-8,analytical standard,50ug/ml in methanol:toluene(4:1)
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Dibenzo(a,i)pyrene | MedChemExpress (MCE)
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γ-六六六标准溶液,58-89-9,analytical standard,50ug/ml in methanol:toluene(4:1)
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2,4′-DDT标准溶液,789-02-6,analytical standard,50ug/mL in 2,2,4-Trimethylpentane
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alpha-六六六标准溶液,319-84-6,analytical standard,50ug/ml in methanol:toluene(4:1)
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1,4-Dioxane-2,5-diol | MedChemExpress (MCE)
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水中氰成分分析标准物质,Covenan 50ug/mL,in 0.1mol/L NaOH
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