ISI STANDARD PERFORMANCE CERTIFICATE
| S.No | Test Parameter | Units | Requirement as per IS:1659 : 2004 | Observed Value BWP Blockboard |
|---|---|---|---|---|
| 1 | Dimensions & Tolerance | |||
| Length | mm | + 6 mm - 0 mm | +1 | |
| Width | mm | + 3 mm - 0 mm | +1 | |
| Thickness | % | ± 5 % | 2 | |
| Squareness | % | 0.2 | 0.15 | |
| Edge Straightness | % | 0.2 | 0.15 | |
| 2 | Dimensional Change Caused by Humidity | |||
| a. Maximum local planeness | < 1/150 | 1/380 | ||
| b. At extreme range of humidity | No Delamination | No Delamination | ||
| 3 | Modulus of Elasticity | N/mm² | ||
| Along the Grain | ||||
| i. Average | 5,000 | 6,667 | ||
| ii. Min. Ind. | 4,200 | 5,994 | ||
| 4 | Modulus of Rupture | N/mm² | ||
| Along the Grain | ||||
| i. Average | 50 | 58 | ||
| ii. Min. Ind. | 42 | 56 | ||
| 5 | Resistance to Water Test (72 hrs Boiling) | Min. Pass Standard | Excellent | |
| 6 | Spot Test | Through and Through Penetration of Preservative Chemicals | Confirms |