In a previous study, it was found that acetic acid was emitted from plywood used as interior material and suggested that emission rates might differ by type of plywood. In this study, emission tests were performed on plywood and on plywood with some interiormaterials to assess emission rates of acetic acid, formic acid and ammonia. Results of measurement of air pollutants in a renovated storage room, where new racks made of plywood are placed,are reported in this paper as a case of the use of plywood in museums. It was confirmed that the emission rate of acetic acid from plywood differed according to the adhesives used or country of manufacture. Plywood using urea resin adhesive showed high rate in the early stage. Plywood made in Japan was slow to decrease in emission rate. In a research of air pollutants in the storage,the air was found to be clean. In contrast, acetic acid concentration inside the racks was rather high, although emission rate of acetic acid from the plywood used for the rack was extremely low. It is assumed that this is because the racks are air tight. This result suggests that air pollutants may be increased by the situation in which plywood is used. Sufficient attention must be paid to gases emitted from plywood. Moreover, it is strongly recommended that plywood be ventilated to decrease emission gases before using it as an interior material
