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17-beta-Estradiol 3,17-diacetate 标准品
4-Nonylphenol-tri-ethoxylate 10 ?g/mL in Acetone
甲氧西林钠(甲氧苯青霉素)
鱼藤酮 BePure-25473YA
First Standard® 甲醇中喹氧灵溶液,100μg/mL
噻虫嗪
多环芳烃混标PAH-Mix9-(US EPA 16)
SEWAGE SLUDGE AMENDED (terra rossa) SOIL (trace elements) 标准品
4.4'-Methylene bis(o-chloroaniline) Solution 100ug/ml in Methanol
GBW(E)061401 那他霉素