Table 1.

The fluorescence dyes used for testing and their concentration and dissolution solvent.

Dye	Solvent	Concentration ($\mu \mathrm{M}$)
SR	Ethanol	0.8
QS	0.5 M ${\mathrm{H}}_2{\mathrm{SO}}_4$	2
Fl	0.1 M NaOH	0.2

Note: SR, sulforhodamine; QS, quinine sulphate; and Fl, fluorescein.