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HPLC Method for Analysis of Allura Red (FD&C Red 40, E129) on a BIST A Column
Separation type: Bridge Ion Separation Technology, or BIST™ by SIELC Technologies Allura Red (FD&C Red 40, E129) is a popular red synthetic dye used in a wide variety of food products. Using SIELC’s newly introduced BIST™ method, Allura Red 1, which ionizes in water, can be retained on a negatively-charged, cation-exchange BIST™ A column. There […]
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HPLC Method for Analysis of Sulfonic acids on BIST™ A+
Separation type: Bridge Ion Separation Technology, or BIST™ by SIELC Technologies Methanesulfonic acid is a popular non-volatile catalyst used in organic reactions due to it being a strong acid. Other sulfonic acids, like 1-Pentanesulfonic acid, 1-Heptanesulfonic acid, 1-Decanesulfonic acid, and 1=Dodecanesulfonic acid are typically used in ion chromatography and for organic syntheses. Using SIELC’s newly […]
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HPLC Method for Analysis of 2 – Naphthalenesulfonic acid and 1,5 -Naphthalenedisulfonic acid
Separation type: Bridge Ion Separation Technology, or BIST™ by SIELC Technologies 2-Naphthalenesulfonic acid and 1,5-Naphthalenedisulfonic acid, also known as Armstrong’s acid, are two similarly-structured compounds. 2-Naphthalenesulfonic acid is commonly used in dye production and 1,5-Naphthalenedisulfonic acid is used in synthesizing the salts of basic drugs and in electrokinetic chromatography. Using SIELC’s newly introduced BIST™ method, […]
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HPLC Method for Analysis of Inorganic anions on BIST™A+ Column
Separation type: Bridge Ion Separation Technology, or BIST™ by SIELC Technologies Using SIELC’s newly introduced BIST™ method, a mixture of many different inorganic anions can be separated on a negatively-charged, cation-exchange BIST™ A column, contrary to conventional chromatographic wisdom. There are two keys to this retention method: 1) a multi-charged, positive buffer, such as N,N,N’,N’-Tetramethyl-1,3-propanediamine […]