Residual sodium carbonate classes based on US Department of Agriculture
| RSC (meq/l) . | Category on quality . | Pre-monsoon samples . | Post-monsoon samples . |
|---|---|---|---|
| < 1.25 | Good | 49 | 53 |
| 1.25–2.5 | Doubtful | 3 | 5 |
| > 2.5 | Unsuitable | 7 | 2 |
| RSC (meq/l) . | Category on quality . | Pre-monsoon samples . | Post-monsoon samples . |
|---|---|---|---|
| < 1.25 | Good | 49 | 53 |
| 1.25–2.5 | Doubtful | 3 | 5 |
| > 2.5 | Unsuitable | 7 | 2 |