Class | Slump value according to standard EN 12350-2 (mm) | Tolerance (mm) | Comments |
S1 | 10 to 40 | ±10 | Firm |
S2 | 50 to 90 | ±20 | Plastic |
S3 | 100 to 150 | ±30 | Very plastic |
S4 | 160 to 210 | Fluid | |
S5 | ≥220 |