Table 3: The prediction result of the discernment model for all materials (Figure 1) analyzed using the low-resolution mid-infrared reflection spectrometer.
| Sample | Actual | Predicted |
| New module tarp | Contaminant | Contaminant |
| Yellow bale bag | Contaminant | Contaminant |
| Color shopping bag | Contaminant | Contaminant |
| JD module outer | Contaminant | Contaminant |
| JD module inner | Contaminant | Contaminant |
| JD module middle | Contaminant | Contaminant |
| White bale bag | Contaminant | Contaminant |
| White shopping bag | Contaminant | Contaminant |
| Bale twine | Contaminant | Contaminant |
| Old module tarp | Contaminant | Contaminant |
| Hard green | Contaminant | Contaminant |
| Black plastic | Contaminant | Contaminant |
| Oil | Contaminant | Contaminant |
| Grease | Contaminant | Contaminant |
| Upland cotton stem | Contaminant | Cotton |
| Pima cotton stem | Cotton | Cotton |
| Upland cotton | Cotton | Cotton |
| Upland cotton | Cotton | Cotton |