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溴丁酰草胺 纯品型
正戊烷标准溶液
Tracemetals in drinking water (Varied Conc in 2% HNO3+Tr HF)
潮霉素B
Dibenzo[h,s]peropyrene
IONONE, BETA-(SG) 标准品
2,4,4',5-Tetrachlorobiphenyl
吡嘧司特钾
Fluchloralin Solution 1000ug/ml in Hexane
青藤碱溶液,100ppm