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37种农药混标(农业部抽查-2020) BePure-31070MB-a2
漆姑草
2-咪唑啉硫酮/乙烯基硫脲 乙酸乙酯中
Tri-n-hexylamine
100ug/ml Phosphorus in water for ion Chromatography(有证书)
N,N'-双(4-氯-3-三氟甲基苯基)脲
74186, Bovine muscle (low residue =of diethyl stilboestrol) 标准品
苍术农残空白质控样
PUNYW25735268 Guanidine,N-[(4-hydroxy-3-iodophenyl)methyl]-
GPC标样-聚异丁烯(Mw 2574000)(超高Mw) 标准品