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Alkanes C19-C40 Kit 标准品
2,3,3',4',5,5',6-Heptachlorobiphenyl Solution 100ug/ml in Hexane (无证书)
水硬度标准物质
2,6-Diisopropylphenol
Cycloprate Solution 100ug/ml in Acetonitrile
Nitrosamines - Solutions
Oxazepam glucuronide 标准品
吡草酮
(11β,16α)-21-(Acetyloxy)-9-fluoro-11,16,17-trihydroxy-pregna-1,4,14-triene-3,20-dione
正己烷中顺式(α)氯氰菊酯溶液准样品