| Column | Value |
|---|---|
| matrix | <app.db.schema.ExposureMatrix object at 0x71ff9077a570> |
| particle | <app.db.schema.ParticleCharacterisation object at 0x71ff9077a300> |
| size_distributions | |
| id | 6 |
| matrix_id | 1 |
| particle_id | 4 |
| fractional_abundance | 0.07 |
| size_bin_min_nm | 10000.0 |
| size_bin_max_nm | 150000.0 |
| notes | PVC fragments from flooring, pipes, and construction materials. |