|
| Concentration levels (µg/mL) | Concentration added (µg/mL) | RSD (%) | RE (%) Accuracy | |
| Intra-day | Inter-day | ||||
| Tartrazine | Low QC | 3 | 0.6 | 2.3 | 1.0 |
| Middle QC | 30 | 0.2 | 1.9 | 0.7 | |
| High QC | 50 | 0.1 | 1.8 | 1.1 | |
| Sunset yellow | Low QC | 3 | 0.5 | 3.1 | −0.7 |
| Middle QC | 30 | 0.2 | 2.6 | 0.7 | |
| High QC | 50 | 0.1 | 1.9 | 0.5 | |