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PCB No. 55,neat 标准品
100ug/mL Chlorite, NaClO2, in water for Ion Chromatography(有证书)
PCB No. 102,10ng/ul 标准品
Herbicide Esters Mixture-8150/8270 2000ug/ml in Acetone
灭草隆 标准品
Ketones + Ethyl Acetate Mix 4-122 标准品
3-O-[2-Acetamido-2-deoxy-β-D-glucopyranosyl]-D-mannopyranose
丙酮中苄嘧磺隆溶液标准物质
PUNYW24690200 Clonixin Impurity 3
气相色谱仪检定用标准物质(丙体六六六-异辛烷)