Table 1: SPRi signal and refractive index of the external medium obtained with different percentage of triethylene glycol per 1 mL of ultrapure water.

% Triethylene glycol in ultrapure water00.512.557.510
SPR signal (pixels)018.8640.6978.35124164.63164.63
Refractive Index1.333001.333051.334101.336201.339451.341801.34360