EX-23.1 4 h03431aexv23w1.txt CONSENT OF PRICEWATERHOUSECOOPERS LLP EXHIBIT 23.1 CONSENT OF INDEPENDENT ACCOUNTANTS We hereby consent to the incorporation by reference in the Registration Statements on Form S-8 (File No. 33-24505, File No. 33-62209, File No. 33-66822) of O.I. Corporation of our report dated February 15, 2002, relating to the financial statements, which appears in this Form 10-K/A. PRICEWATERHOUSECOOPERS LLP Houston, Texas April 1, 2003