
| Nì mion-sgrùdaidh | Riatanasan àbhaisteach (%) |
| SrSO44 susbaint | ≥99.0 |
| Sulfat barium (BaSO44) | ≤0.1 |
| Sulfat calcium (CaSO44) | ≤0.08 |
| Clòraid (Cl) | ≤0.01 |
| Ocsaid calcium (CaO) | ≤0.05 |
| Iarann (Fe) | ≤0.01 |
| Sòidiam (Na) | ≤0.008 |
| Potasium (k) | ≤0.005 |
| Susbaint uisge | ≤0.1 |
| Coltas | Pùdar mìn geal |