Certificate Number History

Examination numbers have been issued sequentially since 1960. The following table shows the years in which the noted certificate numbers were issued.

Certified Industrial Hygienist

Certified Associate Industrial Hygienist

1 to 13 1960 14 to 40 1961 41 to 483 1962 484 to 525 1963 526 to 554 1964 555 to 572 1965 573 to 595 1966 596 to 609 1967 610 to 627 1968 628 to 647 1969 648 to 673 1970 674 to 694 1971 695 to 742 1972 743 to 808 1973 809 to 918 1974 919 to 1002 1975 1003 to 1125 1976 1126 to 1313 1977 1314 to 1521 1978 1522 to 1750 1979 1751 to 2007 1980 2008 to 2175 1981 2176 to 2479 1982 2480 to 2732 1983 2733 to 2956 1984 2957 to 3233 1985 3234 to 3528 1986 3529 to 3848 1987 3849 to 4171 1988 4172 to 4581 1989 4582 to 5090 1990 5091 to 5457 1991 5458 to 5870 1992 5871 to 6335 1993 6336 to 6720 1994 6721 to 7018 1995 7019 to 7284 1996 7285 to 7612 1997 7613 to 7822 1998 7823 to 7966 1999 7967 to 8084 2000 8085 to 8236 2001 8237 to 8464 2002 8466-8740 2003 8741-8903 2004 8904-9110 2005 9111-9268 2006 9269-9429 2007

CAIH - 1 to 12 2001 CAIH 13 to 23 2002 CAIH 24-29 2003 CAIH 30-34 2004 CAIH 35-37 2005