In accordance with the EPBP protocol, an independent third party (PTI Europe Sarl) conducted an evaluation to determine the effect of multilayer PET bottles containing 10% PEF on the PET recycling stream. The results have demonstrated that the PET/PEF multilayer bottles have no negative impact on haze and other properties of the resulting rPET products at a market penetration of 5%, also taking potential local accumulation into account. Based on the assessment's outcome, EPBP has awarded an interim endorsement to Avantium's PEF resin.