EXHIBIT 23.5 CONSENT OF INDEPENDENT ACCOUNTANTS We consent to the inclusion in this registration statement on Form S-4 of our report dated 28th August 1998 on our audit of the consolidated financial statements of Ferro Metal and Chemical Corporation Limited for the year ended 30th June 1996. WILSON WRIGHT & CO., Chartered Accountants and Registered Auditors, 71 Kingsway, London WC2B 6 ST. Date: 17th December 1998 EXHIBIT 23.6 CONSENT OF INDEPENDENT ACCOUNTANTS We consent to the inclusion in this registration statement on Form S-4 of our report dated 29th September 1998 on our audit of the consolidated financial statements of Wychem Limited for the year ended 30th June 1996. WILSON WRIGHT & CO., Chartered Accountants and Registered Auditors, 71 Kingsway, London WC2B 6 ST. Date: 17th December 1998