The three stages are:
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Early Stage: At this stage, you have many design possibilities and a high degree of freedom. The assessments are therefore simpler, often qualitative, and require less data. This is ideal for initial screening and identifying major hotspots without a significant investment in testing.
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Mid Stage: As your project matures and you narrow down your options, the assessments become more detailed. This stage requires more quantitative data to help you discriminate between the most promising SSRbD alternatives.
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Late Stage: When your product design is nearly finalised, a comprehensive and data-intensive assessment is required for final validation. This provides the robust evidence needed to support your material's safety and sustainability claims.