In the last years free formaldehyde quantity in wooden materials has immensely decreased. Nowadays established and standardized procedures for determining the free formaldehyde quantity are above all adjusted to the demands of the particleboards. The problem of measuring free formaldehyde release, representing a vital part of the particleboard industry, was researched. 2 standarized procedures of free formaldehyde measuring in raw particleboards of type P2 were described (perforator and flask procedure). A quite favourable correlation with Pearson`s coefficient R2 = 0.81 was obtained between the 2. Both procedures for measuring the free formaldehyde presence were contrasted also from the economic point of view. The comparison shows that the flask method is much cheaper and requires less time-consuming and complicated work. It also demands far less apparatures compared to the perforator method.