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  2. Certificate of analysis - Wikipedia

    en.wikipedia.org/wiki/Certificate_of_analysis

    In the case of a produced chemical, drug, ingredient, or standard, the manufacturer will likely include a COA for the end user. In the case of a tested product/material/sample, the recipient of the COA will be the entity that ordered the analysis or mandated the test via regulation, as with cannabis testing.

  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 ...

  4. N-(1-Naphthyl)ethylenediamine - Wikipedia

    en.wikipedia.org/wiki/N-(1-Naphthyl)ethylenediamine

    N-(1-Naphthyl)ethylenediamine dihydrochloride is widely used in the quantitative analysis of nitrate and nitrite in water samples by colorimetry.It readily undergoes a diazonium coupling reaction in the presence of nitrite to give a strongly colored azo compound.

  5. Certified reference materials - Wikipedia

    en.wikipedia.org/wiki/Certified_reference_materials

    A certified reference material is a particular form of measurement standard. Reference materials are particularly important for analytical chemistry and clinical analysis. [2] Since most analytical instrumentation is comparative, it requires a sample of known composition (reference material) for accurate calibration.

  6. Avantor - Wikipedia

    en.wikipedia.org/wiki/Avantor

    In 2016, Avantor merged with Nusil Technology. In 2017, Avantor acquired chemical blending business Puritan Products Inc. and laboratory supplies company VWR. The combined company operates under the Avantor name, with VWR and vwr.com remaining as a selling channel. [10]

  7. Eppendorf (company) - Wikipedia

    en.wikipedia.org/wiki/Eppendorf_(company)

    Eppendorf, a company with its registered office in Germany, develops, produces and sells products and services for laboratories around the world.. Eppendorf products are used in academic and industrial research laboratories, e.g. in companies in the pharmaceutical, biotech, chemical and food industries.

  8. Lithium bis(trifluoromethanesulfonyl)imide - Wikipedia

    en.wikipedia.org/wiki/Lithium_bis(trifluorome...

    Download as PDF; Printable version; In other projects Wikidata item; Appearance. ... Chemical formula. LiC 2 F 6 NO 4 S 2 Molar mass: 287.09 g/mol Appearance White solid

  9. Calconcarboxylic acid - Wikipedia

    en.wikipedia.org/wiki/Calconcarboxylic_acid

    Calconcarboxylic acid (IUPAC name 3-hydroxy-4-[(2-hydroxy-4-sulfonaphthalen-1-yl)diazenyl]naphthalene-2-carboxylic acid; commonly called Patton and Reeder's Indicator) is an azo dye that is used as an indicator for complexometric titrations of calcium with ethylenediaminetetraacetic acid (EDTA) in the presence of magnesium. [2]