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Britton–Robinson buffer. The Britton–Robinson buffer ( BRB or PEM) is a "universal" pH buffer used for the pH range from 2 to 12. It has been used historically as an alternative to the McIlvaine buffer, which has a smaller pH range of effectiveness (from 2 to 8). [ 1]
A buffer solution is a solution where the pH does not change significantly on dilution or if an acid or base is added at constant temperature. [1] Its pH changes very little when a small amount of strong acid or base is added to it. Buffer solutions are used as a means of keeping pH at a nearly constant value in a wide variety of chemical ...
The Samsung Galaxy Note 9 (stylized as Samsung Galaxy Note9) is an Android -based phablet designed, developed, produced and marketed by Samsung Electronics as part of the Samsung Galaxy Note series. It was unveiled on 9 August 2018, as the successor to the Samsung Galaxy Note 8. [ 2][ 3][ 4] It is available in six colours (Ocean Blue, Midnight ...
McIlvaine buffer is a buffer solution composed of citric acid and disodium hydrogen phosphate, also known as citrate-phosphate buffer. It was introduced in 1921 by the United States agronomist Theodore Clinton McIlvaine (1875–1959) from West Virginia University, and it can be prepared in pH 2.2 to 8 by mixing two stock solutions. [ 1]
Good's buffers. Good's buffers (also Good buffers) are twenty buffering agents for biochemical and biological research selected and described by Norman Good and colleagues during 1966–1980. [ 1][ 2][ 3] Most of the buffers were new zwitterionic compounds prepared and tested by Good and coworkers for the first time, though some ( MES, ADA, BES ...
Phosphate-buffered saline. Phosphate-buffered saline ( PBS) is a buffer solution (pH ~ 7.4) commonly used in biological research. It is a water-based salt solution containing disodium hydrogen phosphate, sodium chloride and, in some formulations, potassium chloride and potassium dihydrogen phosphate. The buffer helps to maintain a constant pH.
The bicarbonate buffer system is an acid-base homeostatic mechanism involving the balance of carbonic acid (H 2 CO 3 ), bicarbonate ion (HCO −. 3 ), and carbon dioxide (CO 2) in order to maintain pH in the blood and duodenum, among other tissues, to support proper metabolic function. [ 1] Catalyzed by carbonic anhydrase, carbon dioxide (CO 2 ...
Hanks' salts is a collective group of salts rich in bicarbonate ions, formulated in 1940 by the microbiologist John H. Hanks. [1] Typically, they are used as a buffer system in cell culture media and aid in maintaining the optimum physiological pH (roughly 7.0–7.4) for cellular growth. Due to their poorly reactive nature and small ...
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