What is one major challenge of using PCR materials as stated in assessments?

One major challenge of using post-consumer recycled (PCR) materials is the uncertainty about their environmental impact differences. This stems from the fact that PCR materials can vary significantly in quality, composition, and environmental performance based on the sources from which they are derived, as well as the processes used to recycle them.

Each batch of PCR material can have unique characteristics that affect its lifecycle performance, such as energy consumption during production, potential contaminants, and overall sustainability. This variability can make it challenging for manufacturers and product designers to assess the true environmental benefits or drawbacks of using PCR materials compared to virgin resources. As a result, clear and consistent data is often lacking, complicating decision-making related to sustainability goals and product design strategies.

While other options present challenges related to PCR materials, such as sourcing difficulties and regulatory uncertainties, the focus on uncertainty about environmental impacts captures the crux of the complexities involved in integrating PCR materials into sustainable practices.