O.I. Corporation Announces Reduction in Size of Board of Directors and Date of Annual Meeting of Shareholders

Market Wire, February, 2008

O.I. Corporation (NASDAQ: OICO) today announced that its Board of Directors has nominated five directors to stand for election at the Company's upcoming Annual Meeting of Shareholders. The Company's Board is currently comprised of seven directors, including five independent directors. The reduction in the size of the Board will reduce the number of independent directors to three, effective as of the 2008 Annual Meeting of Shareholders.

Ray Cabillot, Chairman of the Board, commented, "Historically, we have had five directors at OI. Reducing the size of our Board will allow us to decrease costs while continuing to meet all governance and regulatory requirements."

The Company's 2008 Annual Meeting of Shareholders will be held on Monday, May 19, 2008, at 11:00 a.m. at the Company's headquarters. Shareholders of record as of April 1, 2008, will be eligible to vote upon the matters proposed for consideration at the meeting.

About O.I. Corporation:

O.I. Corporation, dba O.I. Analytical, develops, manufactures, sells, and services analytical instrumentation that detects, measures, analyzes, and monitors chemicals in liquids, solids, and gases. Providing products used to digest, extract, and separate components of chemical mixtures, the Company designs application-specific solutions for various industries including environmental testing, defense, and petrochemical. Headquartered in College Station, Texas, the Company's products are sold worldwide.

This press release includes certain statements that may be deemed to be "forward-looking statements" within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. All statements, other than statements of historical facts, included in this press release that address activities, events or developments that the Company expects, believes or anticipates will or may occur in the future, are forward-looking statements. These statements are based on certain assumptions and analyses made by the Company in light of its experience and its perception of historical trends, current conditions, expected future developments and other factors it believes are appropriate in the circumstances. Such statements are subject to a number of assumptions, risks and uncertainties, many of which are beyond the control of the Company. Investors are cautioned that any such statements are not guarantees of future performance and that actual results or developments may differ materially from those projected in the forward-looking statements.

Visit the Company's worldwide web site at: http://www.oico.com

Investor Relations: Bruce Lancaster Chief Executive Officer & Chief Financial Officer (979) 690-1711