Exhibit 23.1
CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
We hereby consent to the incorporation by reference in the Registration Statement on Form S-8 (Nos. 033-54158 and 333-115713) of Quaker Chemical Corporation of our report dated June 26, 2003 relating to the financial statements of Quaker Chemical Corporation Retirement Savings Plan, which appears in this Form 11-K.
/s/ PricewaterhouseCoopers LLP
Philadelphia, Pennsylvania
June 25, 2004