| IS series | IS-8010 | IS-7520 | IS-7020 | IS-6033 |
| S content % | 90 min. | 80 min. | 80 min. | 66 min. |
| IS content % | 80 min. | 75 min. | 70 min. | 60 min. |
| Oil content % | 10±1 | 20±1 | 20±1 | 33±1 |
| Acid(as H2SO4) % | 0.05 max | |||
| Ash % | 0.15 max | |||
| 100mesh Sieve residues % | 0.20% | |||
| Average particle size | 6-8μm | |||
