This study was conducted to test the impregnability of wood material according to the pre-vacuumed immersion process and to reveal the usability of cylindrical (plug) samples in impregnation experiments in addition to the cuboid or cubic samples. In this context, cuboids were prepared 30 mm in length, 20 mm in width and 20 mm in thickness, whereas plugs were prepared radially and longitudinally with a diameter of 15 mm and a length of 30 mm. The experimental samples were dried up to the air dry moisture content and were subjected to the surface preparation process according to determine the possible fluid uptake in both radial and longitudinal flow pathways and were impregnated using with three percent concentration of boron compound by normal and pre-vacuumed immersion method. It was observed that the sample preparation techniques for plugs and cuboids were suitable with each other in terms of the mean percentage of void volume filled by preservative fluid radially and longitudinally, while the preparation process of the experimental samples based on the period of the data collection was shorter in plugs than that for cuboids in either flow pathway. And wood samples impregnated by pre-vacuumed immersion method were determined to have a slightly higher preservative fluid uptake than those impregnated with normal immersion method.

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