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Pennsylvania Extractable Polynuclear Aromatic Hydrocarbons (PAH) Standards Mix 2000ug/ml in Methylen
食品黄 4 (C.I.19140)
邻苯二甲酸二庚酯(DHP)(有证书)
LA Steel, Cr-V (SAE 6150)
First Standard® 甲醇中氯硫磷溶液, 100 μg/mL
水杨酸乙酯/羟苯乙酯
甲苯中环嗪酮
BLACK COHOSH STANDARDS KIT
Cyclododecane
农药稻丰散溶液标准物质