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EPA 525.2 替代混标,3种0.5mg/ml于丙酮 标准品
Triadimenol Solution in Toluene
硫酸新霉素
Nitrobenzo[a]- and nitrobenzo[e]pyrene Kit (solutions, 3 samples, 5 compounds)
PUNYW25081184 Ciclopirox Olamine Impurity A
12种氯苯混合物 HJ621-2011 BePure-30691TM
Reference material Au76/Cu16/Ni6/Zn2 (EN1811:2011)
开蓬(十氯酮) BePure-21065
5,6-Methylenedioxy-2-aminoindane
n-Hexatriacontane (d74)