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灭幼脲标准溶液,57160-47-1,analytical standard,100ug/ml in actone
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First Standard® 甲醇中4-氯苯氧乙酸钠溶液,100ug/ml
Sodium 4-chlorophenoxyacetate solution in Methanol, 100ug/mlFirst Standard®天津
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苯并[a]蒽标准溶液,2000ug/ml in Toluene
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alpha-六六六标准溶液,319-84-6,analytical standard,100ug/ml in petroleum ether
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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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外环氧七氯标准溶液,1024-57-3,analytical standard,100ug/ml in Petroleum ether
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外环氧七氯标准溶液,1024-57-3,analytical standard,100ug/ml in Petroleum ether
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残杀威标准溶液,114-26-1,analytical standard,100ug/ml in acetone
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p, p’-DDE标准溶液,72-55-9,analytical standard,100ug/ml in petroleum ether
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γ-六六六标准溶液,58-89-9,analytical standard,100ug/ml in methanol
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