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电导率 200,000 Microsiemens/cm 25°C 标准品
7.12-Dimethylbenz(a)anthracene Solution 100ug/ml in Toluene
甲醇中噻虫胺
农残混标44
酞磺胺噻唑
甲醇中苯酰菌胺
Aceto-d3-phenone 标准品
First Standard® 丙酮中溴硝醇溶液,100μg/mL
N-(4-Hydroxyphenyl)-propionamide
3-Methyl-1-pentyn-3-ol