This report describes the interior finishing system to prevent hospital infections. This system's finishing materials have an antibacterial activity and chemical resistance, and are easy to clean, First, their efficiencies were evaluated by three laboratory tests. Next, a field test was carried out by putting them to practical use. Finally, to check the durability of the antibacterial agent, the materials were washed, and subject to UV rays and abrasions. Then their antibacterial activities were evaluated. As the result, the durability of the antibacterial agent, and the effectiveness of this test method in evaluating the durability (of this agent) were confirmed.
