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  2. Ellman's reagent - Wikipedia

    en.wikipedia.org/wiki/Ellman's_reagent

    This reaction is rapid and stoichiometric, with the addition of one mole of thiol releasing one mole of TNB. The TNB 2− is quantified in a spectrophotometer by measuring the absorbance of visible light at 412 nm, using an extinction coefficient of 14,150 M −1 cm −1 for dilute buffer solutions, [4] [5] and a coefficient of 13,700 M −1 cm −1 for high salt concentrations, such as 6 M ...

  3. Refractive index and extinction coefficient of thin film ...

    en.wikipedia.org/wiki/Refractive_index_and...

    A. R. Forouhi and I. Bloomer deduced dispersion equations for the refractive index, n, and extinction coefficient, k, which were published in 1986 [1] and 1988. [2] The 1986 publication relates to amorphous materials, while the 1988 publication relates to crystalline.

  4. Texas Red - Wikipedia

    en.wikipedia.org/wiki/Texas_Red

    The solution in the bottle (15 ml) has 0.009 mg/ml Texas Red in DMF.Bulk powder is dark purple. Texas Red or sulforhodamine 101 acid chloride is a red fluorescent dye, used in histology for staining cell specimens, for sorting cells with fluorescent-activated cell sorting machines, in fluorescence microscopy applications, and in immunohistochemistry.

  5. Determination of equilibrium constants - Wikipedia

    en.wikipedia.org/wiki/Determination_of...

    The chemical model consists of a set of chemical species present in solution, both the reactants added to the reaction mixture and the complex species formed from them. Denoting the reactants by A, B..., each complex species is specified by the stoichiometric coefficients that relate the particular combination of reactants forming them.

  6. Tris(bipyridine)ruthenium(II) chloride - Wikipedia

    en.wikipedia.org/wiki/Tris(bipyridine)ruthenium...

    Tris(bipyridine)ruthenium(II) chloride is the chloride salt coordination complex with the formula [Ru(bpy) 3]Cl 2.This polypyridine complex is a red crystalline salt obtained as the hexahydrate, although all of the properties of interest are in the cation [Ru(bpy) 3] 2+, which has received much attention because of its distinctive optical properties.

  7. Extinction coefficient - Wikipedia

    en.wikipedia.org/wiki/Extinction_coefficient

    Extinction coefficient refers to several different measures of the absorption of light in a medium: Attenuation coefficient , sometimes called "extinction coefficient" in meteorology or climatology Mass extinction coefficient , how strongly a substance absorbs light at a given wavelength, per mass density

  8. 3,3',5,5'-Tetramethylbenzidine - Wikipedia

    en.wikipedia.org/wiki/3,3',5,5'-Tetramethylbenzidine

    3,3′,5,5′-Tetramethylbenzidine or TMB is a chromogenic substrate used in staining procedures in immunohistochemistry as well as being a visualising reagent used in enzyme-linked immunosorbent assays (). [1]

  9. Acetone (data page) - Wikipedia

    en.wikipedia.org/wiki/Acetone_(data_page)

    Download as PDF; Printable version; ... Vapor pressure of acetone based on formula, ... Extinction coefficient, ε 12.4 L/(mol·cm) @ 280 nm ...