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51种农药混标 Bepure-33036LA-f
Chlorflurecol-methyl ester 标准品
23种农残混标
First Standard® 甲醇中杆菌肽溶液,1000ug/ml
3,4-Dimethyldiphenylsulfide
Lead iodide anhydrous (无证书)
25种农药混标 BePure-30245b1XA
4-Acetamidophenol (无证书)
ACETYLPYRAZINE, 2-(SG) 标准品
甲嘧磺隆