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91894, Sewage sludge (mixed origin) (tra ce elements) 标准品
Arsenic - As metal, 99.999%, 2% HNO3
聚苯乙烯磺酸钠 标准品,10,000, for GPC
Methylisothiourea sulfate (无证书)
5% NH4NO3 in H2O(有证书)
PEG 6000 dioleate
1-Hydroxyindeno[1,2,3-c,d]pyrene 标准品
rGlucagon 标准品
(17β)-2-(Acetyl-13C2)-17-(benzoyloxy)-4-oxaandrost-5-en-3-one
司帕沙星