CONTRACT RESEARCH TIIS also accepts contractual scientific research projects on industrial safety in specific areas. A large percentage of our clients are from the Ministry of Health, Labour and Welfare, and TIIS's member companies. In 2010, TIIS implemented the following research subjects: (1) Testing of Function of Particulate and Gas Masks appearing on the Market (2) Optimum Method for Checking, Maintenance and Measurement for Vibrational Apparatus (3) Domestic Comittee for Certification Scheme of IECEx System (4) Research on Testing and Evaluation Method for Aging Ex-Apparatus