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联苯肼酯二氮烯
Butyryl-d7 Chloride 标准品
Mecoprop-2-ethylhexyl ester,certified 标准品
First Standard® 莫能菌素钠盐
EXPANDED POPS PESTICIDES CLEANUP SPIKE W/ ENDOSULFAN SULFATE (13C,99%)
F.A.M.E. Mix C8 - C22
Cesium Carbonate (Cs2CO3) 99.99+%(有证书)
2.2'.5.6'-Tetrachlorobiphenyl Solution 100ug/ml in Hexane (无证书)
Silicon in B5 标准品
绿麦隆溶液,100ppm