| ASSAY | 85% min |
| Color | 20 max |
| Fluorine as F | 10ppm max |
| H3PO3 | 120ppm max |
| Arsenic as As | 1ppm max |
| Heavy Metal as Pb | 5ppm max |
| ASSAY | 75% min |
| Color | 20 max |
| Fluorine as F | 10ppm max |
| H3PO3 | 120ppm max |
| Arsenic as As | 1ppm max |
| Heavy Metal as Pb | 5ppm max |
| Item | 85% Phosphoric acid | 75% Phosphoric acid |
| Chroma/ Hazen | 20.0 Max | 20 Max |
| Phosphoric acid (H3PO4),w/% | 85.0 Min | 75.0 Min |
| Chloride (Calculated by CL),w/% | 0.0005 Max | 0.0005 Max |
| Sulfate (Calculated by SO4),w/% | 0.003 Max | 0.003 Max |
| Iron (Calculated by Fe),w/% | 0.002 Max | 0.002 Max |
| Arsenic (As),w/% | 0.0001 Max | 0.0001 Max |
| Heavy metal (Calculated by Pb),w/% | 0.001 Max | 0.001 Max |