2.2. Short-term property testing Mechanical and physical property tests (vertical density profile,internal bond, modulus of rupture and elasticity, thickness swell and water absorption) were conducted on the particleboards after conditioning to constant weight and moisture content at 65 ± 5% relative humidity and 20 ± 3 ◦C for 3 weeks. The tests were conducted
according to ASTM D1037-6a. Results comparison were done according to bothANSIA208.1-1999 and 2009 and graphically presented with ANSI A208.1-1999 which permits the calculation of least significant differences between board types unlike A208.1-2009 which is presented based on the lower 5th or upper 95th percentile limit. It is worth noting that the conclusions reached using each ANSI version, i.e., 1999 and 2009 are essentially equivalent. The test data obtained were analyzed using an analysis of variance (ANOVA) and the Tukey–Kramer honestly significant difference test in JMP 11 to detect statistical differences at a 5% significance level between particleboard panels reinforced with Flax or Hemp fiber.