public roster. The ABIH is a recognized certification board by the International Occupational Hygiene Association (IOHA). The CIH certification has been accredited internationally by the International Organization for Standardization/International Electrotechnical Commission (ISO/IEC 17024) (see ANSI). In the United States, the CIH has been accredited by the Council of Engineering and Scientific Specialty Boards [CESB]. The Association of Professional Industrial Hygienists, Inc. (APIH) was established in 1994 to offer credentialing to industrial hygienists who meet the education and experience requirements found in Tennessee Code Annotated, Title 62, Chapter 40. APIH adopted the Tennessee Code as its basis for credentialing because it was the first legal definition in the United States of an industrial hygienist in terms of education and experience. The APIH Registration Committee investigates and verifies, through electronic means or correspondence, both educational and experience accomplishments claimed by each applicant for registration. The Committee determines the appropriate level of registration, Registered Industrial Hygienist or Registered Professional Industrial Hygienist, and then authorizes the registration certificate to be issued. Canada In Canada, a practitioner who successfully completes a written test and an interview administered by the Canadian Registration Board of Occupational Hygienists can be recognized as a Registered Occupational Hygienist (ROH) or Registered Occupational Hygiene Technician (ROHT). There is also designation to be recognized as a Canadian Registered Safety Professional (CRSP). United Kingdom The Faculty of Occupational Hygiene, part of the British Occupational Hygiene Society, represents the interests of professional occupational hygienists. Membership of the Faculty of Occupational Hygiene is confined to BOHS members who hold a recognized professional qualification in occupational hygiene. There are three grades of Faculty membership: Licentiate (LFOH) holders will have obtained the BOHS Certificate of Operational Competence in Occupational Hygiene and have at least three years’ practical experience in the field. Members (MFOH) are normally holders of the Diploma of Professional Competence in Occupational Hygiene and have at least five years’ experience at a senior level. Fellows (FFOH) are senior members of the profession who have made a distinct contribution to the advancement of occupational hygiene. All Faculty members participate in a Continuous Professional Development (CPD) scheme designed to maintain a high level of current awareness and knowledge in occupational hygiene. India The Indian Society of Industrial hygiene was formed in 1981 at Chennai, India. Subsequently, its secretariat was shifted to Kanpur. The society has registered about 400 members, about 90 of whom are life members. The