O.I. Corporation ("OI") was organized in 1963 under the Business Corporation Act of the State of Oklahoma under the name Clinical Development Corporation (CDC), a building contractor for medical and research enterprises. In 1969, CDC changed its name to Oceanography International Corporation ("OIC") and moved its headquarters to College Station where it changed its focus to oceanography equipment. This led to OIC's production of water-quality measurement instrumentation, as oceanography equipment sales declined. In 1969, O.I. Corporation developed the Company's first TOC analyzer. Since that time, the Company has become recognized worldwide as a provider of quality analytical instrumentation. The Company changed its name to O.I. Corporation in 1980.

O.I. Corporation has a long history of acquisition activity including the acquisition of ALPKEM in 1992, Floyd Associates in 1994, CMS Research Corporation in 1994, Laboratory Automation, Inc. in 1995, and General Analysis Corporation in 1999. CMS Research Corporation continues to operate in Birmingham, Alabama as a wholly-owned subsidiary of O.I. Corporation.

O.I. Corporation does business worldwide as OI Analytical and designs, manufactures, markets, and supports analytical instruments used for sample preparation, detection, and measurement of chemical compounds. The Company provides the highest quality instruments available at the best value to its customers. OI’s products are supported by an ever-increasing network of field sales, service, and applications personnel. The Company's products are sold worldwide by direct sales, independent representatives, and distributors.