Fluorescein, disodium salt *Fluorescence reference standard*

Fluorescein, disodium salt *Fluorescence reference standard*
Cat # 2
Storage F/D/L (see storage codes below)
Unit Size 100 mg
Ex (nm) 490
Em (nm) 514
MW 376.27
Solvent Water
Fluorescein, disodium salt is water-soluble version of fluorescein (see product #1). Fluorescein is a fluorophore widely used in microscopy, forensics and serology to detect latent blood stains. Fluorescein has an absorption maximum at 490 nm and emission maximum of 514 nm (in water). It has a pKa at 6.4 and multiple ionization equilibria. This leads to pH dependent absorption and emission over the range of 5 to 9. It has an isoabsorptive point at 460 nm.
Detailed Information:   Protocol   References   MSDS   Spectrum
Related Products:     iFluor Rapid Tests 
Storage Codes:
  D = Desiccated
  L = Avoid light
  F = Freeze (<-15 癈)
  R = Refrigerated (2-4 癈)
  RT = Room temperature (4-50 癈)