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Fenitrooxon-d6 (O,O-dimethyl-d6) 标准品
First Standard® 正己烷中39种农药混标溶液,10μg/mL
乙腈中联苯菊酯溶液,1000μg/mL 广电计量
紫檀芪 对照品
65507, 4-Methylchrysene (purity) 标准品
甲苯中克菌丹
Volatile Organic Compounds-Mixture 100ug/ml in Methanol
S-生物烯丙菊酯(介质:正己烷)
禾草丹溶液,1000ppm
敌百虫