The Fluka or Supelco standards provided by Sigma Aldrich can be downloaded electronically from the official website (www.sigma aldrich. com) with a Certificate of Analysis (CoA) that includes information such as brand (Fluka or Supelco), product number (Product No.), batch number (Lot or Batch No.), purity/concentration, detection method HPLC/GC, and expiration date. All Supelco environmental standards can provide information data packets containing production and analytical testing information, which meet the requirements of the United States Environmental Protection Agency (US EPA) in March 1990 and subsequent Contract Laboratory (CLP) declarations. Each data package file contains our rigorous analysis methods for raw material identity verification and purity testing, and provides accurate purity or concentration information for Supelco standards. If you need such information data packets, you can obtain them for free after submitting the application. The packaging of Supelco and Fluka standard products has undergone strict inspection and screening to ensure safe transportation and storage of standard products, and easy access. Fluka standard products are generally packaged in small brown threaded vials. Supelco standard products are generally packaged in brown ampoules, sealed with inert gas filling, and also packaged in cardboard boxes outside the ampoules, making storage and management convenient and easy to understand at a glance. Supelco was founded in 1966 and has been dedicated to the research and production of chromatographic consumables. It is a professional manufacturer of chromatographic consumables. With over 40 years of technical experience in chromatography and analysis, we have multiple patented technologies and offer a wide range of products including gas chromatography columns (including chiral columns) and accessories, liquid chromatography columns (including chiral columns) and accessories, solid-phase extraction columns and devices, solid-phase microextraction handles and extraction heads, air detection products, analytical standards and sample bottles. In 1993, Supelco officially joined Sigma Aldrich in the United States, becoming a professional brand in the analysis business under Sigma Aldrich. Contact information: 021-61415566-8220

371 pesticide standards (GB2763-2014 National Food Safety Standard Maximum Residue Limits for Pesticides in Food)