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  2. Certificate of analysis - Wikipedia

    en.wikipedia.org/wiki/Certificate_of_analysis

    A certificate of analysis (COA) is a formal laboratory-prepared document that details the results of (and sometimes the specifications and analytical methods for) one or more laboratory analyses, signed—manually or electronically—by an authorized representative of the entity conducting the analyses.

  3. VWR International - Wikipedia

    en.wikipedia.org/wiki/VWR_International

    VWR acquired two other companies earlier in the year, EPL Archives and Seastar Chemicals [17] On May 5, 2017, it was announced that Avantor , a Center Valley, Pennsylvania-based supplier of ultra-high-purity materials to the life sciences and advanced technology industries, would acquire VWR for $33.25 in cash per share of VWR common stock ...

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    Completely free PDF editing with no download required. Cons. May need Canva Pro to access certain images or design features. Best Freemium App: iLovePDF. ILovePDF is one of the most popular apps ...

  5. List of chemical databases - Wikipedia

    en.wikipedia.org/wiki/List_of_chemical_databases

    Chemexper Chemical Directory catalogue chemicals CASno Structure SMILES "ChemExper". Chemxpert Database Chemxpert Chemical Database small molecules database buyers,suppliers "ChemxpertDB". 10,00000 Chemical Book East West University: commercially available compounds CASno, suppliers, properties "Chemical Book". 200,000 Chemical Register

  6. Certified reference materials - Wikipedia

    en.wikipedia.org/wiki/Certified_reference_materials

    Secondary chemical reference substance: substance whose characteristics are assigned and/or calibrated by comparison with a primary chemical reference substance. The United States National Institute of Standards and Technology (NIST) uses the trade marked term [ 12 ] Standard Reference Material (SRM) to denote a certified reference material ...

  7. Certificate of origin - Wikipedia

    en.wikipedia.org/wiki/Certificate_of_origin

    A Certificate of Origin or Declaration of Origin (often abbreviated to C/O, CO or DOO) is a document widely used in international trade transactions which attests that the product listed therein has met certain criteria to be considered as originating in a particular country.