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3-Ethyl-2-methoxypyrazine
DDT-Endrin混标,500ug/ml于甲醇,1ml 标准品
Reformulated Gasoline (nominal 10% Ethanol)
First Standard® 潮霉素B
Hydroxyhydroquinone (无证书)
First Standard® 乙腈中安果磷溶液,100μg/mL
螺旋霉素溶液, 1000ppm
WASTEWATER (INFLUENT) (trace elements) 标准品
First Standard® 敌蝇威
Moisture in Transformer Oil