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Linear alkylbenzenes (sometimes also known as LABs) are a family of organic compounds with the formula C 6 H 5 C n H 2n+1. Typically, n lies between 10 and 16, although generally supplied as a tighter cut, such as C 12 -C 15 , C 12 -C 13 and C 10 -C 13 , for detergent use. [ 1 ]
VWR was founded by John Taylor as the John Taylor Company in 1852, selling mining and laboratory products. [7] Since then, the company evolved to focus on the laboratory market. It also has a presence in the cleanroom, safety, and clinical markets. In 1902, it was purchased by F.W. Braun, and merged into his company the F.W. Braun Corporation. [8]
The company focused on providing analytical and laboratory products, and had revenues of over $2 billion in 2004. [10] Fisher Scientific was founded in 1902 by Chester G. Fisher from Pittsburgh. [11] [12] It focused on providing laboratory equipment, chemicals, supplies and services used in healthcare, scientific research, safety, and education ...
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 ...
Chemical & Engineering News publishes an annual list of the world's largest chemical producers by sales, excluding formulated products such as pharmaceutical drugs and coatings. [1] In 2018, sales of the top fifty companies amounted to US$951,000,000,000, an increase of 11.8% compared to the top fifty producers of 2017. [2]
One characteristic of a research chemical is that it is for laboratory research use only; a research chemical is not intended for human or veterinary use. This distinction is required on the labels of research chemicals and exempts them from regulation under parts 100-740 in Title 21 of the Code of Federal Regulations ( 21CFR ).
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ACS grade is the highest level of purity, and meets the standards set by the American Chemical Society (ACS). The official descriptions of the ACS levels of purity is documented in the Reagent Chemicals publication, issued by the ACS. [3] [4] It is suitable for food and laboratory uses. Reagent grade is almost as stringent as the ACS grade.
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