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农药精吡氟禾草灵溶液标准物质
Lead Paint Film (Gold), Nominal 0.7 mg/cm2
4-Methyldiphenylmethane
乙氰菊酯 标准品
17β-雌二醇 同位素-d2
n-Dodecane Solution 100ug/ml in Methanol
PESTICIDE SURROGATE MIX, 1X2ML,ACETONE 200UG/ML 标准品
3-Chloropropionitrile
Irganox?MD 1024 标准品
Samarium Oxide (Sm203) 99.99%(有证书)