PCR and PIR are not shown as separate material options because their environmental impacts cannot be reliably distinguished in a consistent way. In practice, the way PCR and PIR are collected, sorted, and processed differs widely between regions, suppliers, and recycling systems, and these differences are not captured consistently in available data.
Although PCR and PIR come from different waste streams, the difference in environmental impact between them is usually small compared to the total impact of producing the material itself. Separating them would therefore require assumptions that are not well supported by consistent and verifiable data.
By using a single recycled-material dataset, results remain clear, comparable, and trustworthy, without adding unnecessary complexity or false precision.