| No. | ITEMS DESCRIBE | Specification( s) |
| Premium Grade | First Grade | Qualified |
| 01 | Degree of Polymerization | 1030 ± 30 |
| 02 | K-value | 66-68 |
| 03 | The number of impurities and foreign particles, pcs ≤ | 16 | 30 | 60 |
| 04 | Volatile Matter, % ≤ | 0.30 | 0.40 | 0.50 |
| 05 | Bulk Density, g/ml ≥ | 0.49 | 0.46 | 0.43 |
| 06 | Residue on 0.25mm sieve screenings,% ≤ | 1 | 2 | 3 |
| 07 | Residue on 0.063mm sieve screenings,% ≥ | 97 | 92 | 90 |
| 08 | The number of "fish eyes" , pcs/400cm2 ≤ | 20 | 30 | 60 |
| 09 | Plasticizer absorption of 100g PVC resin, g ≥ | 24 | 22 | 20 |
| 10 | Whiteness ( 160C, 10min), % ≥ | 78 | 75 | 70 |
| 11 | Water extract Conductivity, µs/(cm·g) ≤ | - |
| 12 | VCM Residual, µg/g ≤ | 2 |
| 13 | Flow Time, s ≤ | 60 |
Complaint
