The diploma thesis is focused on the examination of hygienic properties of boards intended for production of furnitur. The quality of materials considered for hygienic safety is at present an important indicator of the quality of products used in the interior. Formaldehyde is a substance harmful to human health and therefore formaldehyde emissions from bonded materials and products are monitored. The research was focused on monitoring formaldehyde emissions from wood-based panels (particleboard, MDF, HDF). The formaldehyde emission was determined by the desiccator method according to the standard JIS A 1460 followed by spectrophotometric measurement. Individual glued materials were judged according to the emission quantity of formaldehyde in terms of their classification into the formaldehyde classes given in EN 13986. All the tested particleboards met the requirement of the standard and could be classified into the formaldehyde class E1. Some of the MDF did not meet the requirement of the standard for the formaldehyde class E1. HDF showed the lowest values of formaldehyde emission.