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Chloropicrin & Ethylene dibromide 标准品
头孢拉定溶液,100ppm
Manganese ammonium phosphate
乙缩醛二乙醇
Diluted Isosorbide Mononitrate Related Com-pound A
Octyl aldehyde Solution 1000ug/ml in Acetonitrile
右旋丙烯菊酯 标准品
2,3,4,5,6-五氯联苯(PCB 116) 标准品
First Standard® 乙腈中特丁硫磷-OXON溶液, 1000μg/mL
辣椒粉中的吡虫啉质控样 BQC1034123491