General - Originally issued under provisions of the law that existed prior to 1961. The Generals were only issued as clear credentials and were therefore considered to be one-tier credentials. These credentials are no longer issued on an initial basis but renewals are issued to the holders of General Credentials. Some were issued for the life of the holder and need not be renewed.
Standard (Fisher) - Originally issued under the provisions of law (Fisher Act) beginning in 1961 and available to first-time applicants until September 15, 1974 and under certain conditions until 1976. The Standards were issued under a two-tier system. Most individuals who qualified for requirements, were issued a clear (or full) credential. These credentials are not longer issued on an initial basis but renewals are issued to the holders of clear Standard Credentials. Some were issued for the life of the holder and need not be renewed.