- Tristel said approval from the United States Environmental Protection Agency for its foam-based chlorine dioxide product DUO will come later than it had originally expected.

EPA approval is now anticipatd in May, 2008, rather than late in 2007.

The delay comes after the agency informed Tristel that it needed additional information to complete its assessment.

The additional data has largely been completed and submitted, Tristel said.

At 9:38am: [LON:TSTL] Tristel PLC share price was -22.5p at 250p

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