Chromatographic substrate

Other Uses. The form 5A is a traditional gas sohd chromatographic substrate for permanent gas analysis, the butane isomers, and cryogenic analyses of hydrogen isotopes. It is an additive to powders to improve flow properties and... 

Since the publication of these books, colloidal silica research has been driven forward not only by new applications in the conventional glass and ceramic industries and in metallurgy but also by the development of new and more sophisticated needs, for example, in the areas of electronic materials, catalysis, chromatographic substrates, and paper and pulp processes. 

Chortyk, O.T, W.S. Schlotzhauer, and R.L. Stedman Lithium chloride as a gas chromatographic substrate for polynuclear aromatic hydrocarbons J. Gas Chromat. 3... 

As a fractionation method, I developed chromatography of nucleic acids on hydroxyapatite, a calcium phosphate which had been used by Tiselius et al. (1956) for the fractionation of proteins. Previous observations (Bernardi and Cook, 1960a,b,c) that hydroxyapatite was particularly good as a chromatographic substrate for fractionating of phospholipoproteins characterized by different phosphorylation levels convinced me to try it on DNA. The main discovery was that hydroxyapatite could fractionate single- from double-stranded DNA (Fig. 1.4 left panel), the former being eluted by a lower phosphate... 

Proteolytic enzyme from the latex of Carica papaya with an approximate molecular weight of 27000. It is differentiated from papain in electrophoresis behavior, in solubility and in substrate specifity. Isolation by acidify of papaya-latex with HCl, salting out with NaCl and following chromatographic purification. The formulation contains L-cysteine as reducing agent. 

The loading of the activated monomeric catalyst could be decreased to a level of 0.04 mol% for certain substrates [turn over number 2,450], The developed process does not require the use of inert gas techniques and in most cases chromatographic purification was not necessary to obtain analytically pure products as no side products were formed and the catalyst could be separated by filtration. 

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