| Column | Value |
|---|---|
| matrix | <app.db.schema.ExposureMatrix object at 0x7cf758eab200> |
| particle | <app.db.schema.ParticleCharacterisation object at 0x7cf758fec920> |
| size_distributions | (<app.db.schema.ParticleSizeDistribution object at 0x7cf758eaab40>) |
| id | 9 |
| matrix_id | 1 |
| particle_id | 15 |
| fractional_abundance | 0.03 |
| size_bin_min_nm | 1.0 |
| size_bin_max_nm | 50.0 |
| notes | PS ultrafine sphere; exercises ultrafine_nano kinetic fractions. AURORA preliminary 2026. |