**4. Conclusion**

A systematic procedure to fabricate and evaluate custom particle boards made from two types of agricultural waste product is explained in detail. In total, six variation of waste boards are evaluated, and they are fabricated using different paddy waste types and different bonding resins, i.e. Urea Formaldehyde (UF) and Phenol Formaldehyde (PF). Two standard setup and procedures for measuring their dielectric properties between 2.2 GHz and 3.3 GHz are presented and compared. The results, calibration and factors influencing measurement accuracy are then discussed. Rice husk-based MUTs are measured to be higher in terms of dielectric properties compared to rice straw-based MUTs. This is mainly due to the former's small particle size, enabling a larger surface area which absorbs more test signal. Comparison of two measurement methods presented shows a good agreement, with uncertainties of less than 15 %. The measurements have also proven that MUTs fabricated using PF is higher than UF due to the ability of the former to absorb moisture. The measurement results presented will be potentially useful in encouraging the use of such sustainable, renewable materials at microwave frequencies.
