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Sigma-Aldrich Corporation NASDAQ: SIAL, headquartered in St. Louis, Missouri, is a supplier of reagents and materials for use in research and development, diagnostics and analysis. They have facilities in 35 countries and manufacture many of the chemicals they sell. Additional recommended knowledge.

Sigma-Aldrich. Sigma-Aldrich from the US is one of the largest producers and distributors of chemicals and laboratory equipment items worldwide. Founded in 1934 the company Sigma was merged in 1976 with the company Aldrich to form the global corporation Sigma-Aldrich. The product portfolio of Sigma-Aldrich contains over 230,000 reagents and

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HPLC Buffers. Buffers are solutions of a weak acid and its conjugate base, or a weak base and its conjugate acid. In analytical chemistry, buffers are typically used in reversed-phase high performance liquid chromatography (RP-HPLC), when the sample contains acidic or basic functional groups. Buffers mitigate the influence of hydrogen/hydronium

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2021/7/16 · Merck Supelco Sigma-Aldrich. Supelco™ (former Sigma-Aldrich) is a division of Merck, specialized in the field of chromatography. Merck Supelco™ offers a wide range of HPLC columns, GC columns, special columns chiral, sample preparation, filters, syringes and vials, tools and standards. Many, many smart parts for the daily use in the lab.

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