A 50 gram natural soil matrix sample in a screw cap amber bottle to be analyzed for one of the following Arochlors: 1016, 1221, 1232, 1242, 1248, 125

NSI土壤QC样-多环芳烃(HPLC测定) A 100 gram natural soil matrix sample in a screw cap amber bottle to be analyzed for: Acenaphthene Chrysene Acenaphthylene Dibe

 饮料中色素 标准物质（分析胭脂红、柠檬黄、日落黄） 分析成分： Soft drink - Colours Known weights of three food colours were added to a diluted solution of commercial soft dr

Iron (Metallo-Organic)  Iron (Metallo-Organic)

Chromium (Metallo-Organic)

Silver (Metallo-Organic) Silver (Metallo-Organic)

Aluminum (Metallo-Organic)

Zinc (Metallo-Organic)   Zinc (Metallo-Organic)

LA Steel, Cr-Mo-Al (Nitralloy rG)

Sodium (Metallo-Organic)   Sodium (Metallo-Organic)