STR 5L

- Dirt content (%wt) < 0.04 max
- Ash content (%wt) < 0.40 max
- Volatile matter content (%wt) < 0.80 max
- Nitrogen content (%wt) < 0.60 max
- Initial Wallace Plasticity (Po) > 35.0 min
- Plasticity Retention Index (PRI) > 60.0 min