White Top Testliner is a kind of 2-ply paper which consists of fresh or recycled fibers on the top side and waste paper on the bottom.
White Top Test Liner ( W.T.T.L 125 gr/m2 ) % Virgin fiber 40 Standard Specification
| ITEM | RESULT | UNIT | |
| Grammage | 125 ± 4% | gr/m2 | |
| R.C.T | 0.7 – 1 | KN/m | |
| Cobb | Top | 40 ± 10 | gr/m2 |
| Back | 70 ± 10 | ||
| Burst | 310 – 340 | kpa | |
| Brightness | 74 – 76 | % | |
