Complaint
| Formic acid content | 85%min | 90%min | 94%min |
| (Cl-) | 0.006%max | 0.005%max | 0.005%max |
| (SO4 2-) | 0.02%max | 0.002%max | 0.002%max |
| 9Fe3+) | 0.0006%max | 0.0005%max | 0.0005%max |
| Residue | 0.06%max | 0.020%max | 0.020%max |
| Color(Pt-Co),Hazen Units | 20 | 10 | 10 |
