HCN content pulp
It is determined by the color of litmus paper based on a chemical reaction between hydrocyanic acid (HCN) and picric acid
| Code | Term | Description |
|---|---|---|
| 1 | Yellow (No HCN in measurable form) | |
| 2 | Pink (Moderately poisonous) | |
| 3 | Red (Very poisonous) |