Table 1 Optimization of parameters affecting smartphone based colorimetric analysis: a) Color scale channel and imaging background and b) distance between smartphone camera and sample cuvette
a | |||
|---|---|---|---|
Sa | r2a | ||
RGB scale channel | Red | 0.292 | 0.7274 |
Green | 0.874 | 0.9780 | |
Blue | 11.52 | 0.9989 | |
Imaging background | White | 11.52 | 0.9989 |
Black | 4.389 | 0.9968 | |
b | |||||
|---|---|---|---|---|---|
Distance (cm) | 3.0 | 5.0 | 7.0 | 9.0 | 11.0 |
RSD % b | 14.624 | 7.003 | 3.915 | 7.049 | 3.972 |