AGREEMENT TO JOINTLY FILE SCHEDULE 13DFarnam Street Partners Lp /Mn • January 16th, 2009 • Laboratory analytical instruments
The undersigned hereby agree to jointly prepare and file with regulatory authorities a Schedule 13D and any future amendments thereto reporting each of the undersigned’s ownership of securities of O.I. Corporation and hereby affirm that such Schedule 13D is being filed on behalf of each of the undersigned.
