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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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β-六六六标准溶液,319-85-7,analytical standard,50ug/ml in methanol
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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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γ-六六六标准溶液,58-89-9,analytical standard,50ug/ml in methanol:toluene(4:1)
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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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巴罗克Biologix 25ml/50ml/55ml/100ml 试剂槽
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库伦电量法卡尔费休试剂(有隔膜),无吡啶,1.5gH2O/100ml,阳极用
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库伦电量法卡尔费休试剂(有隔膜),无吡啶,1.5gH2O/100ml,阴极用
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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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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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