Table 2.
Recovery ratios of test coupons
| Test material | Recovery ratio (%) |
| SS | 53±10 |
| PVC | 26±16 |
| GS | 48±9 |
| PS | 51±9 |
| PU | 52±7 |
| CC | 45±11 |
Data are expressed as mean±SD with ten coupons
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