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Comparison of different particle adsorption procedures (drop‐on‐grid vs grid‐on‐drop)
| Suspension | Adsorption | Particles/square | Interquartile range | No. Grids |
|---|---|---|---|---|
| Spore, 108 part per ml | drop‐on‐grid | 9 | 0 | 3 |
| grid‐on‐drop | 0 | 0 | 3 | |
| Spore, 5 × 108 part per ml | drop‐on‐grid | 52 | 8 | 3 |
| grid‐on‐drop | 1 | 2 | 3 | |
| Virus, 108 part per ml | drop‐on‐grid | 10 | 2 | 3 |
| grid‐on‐drop | 4 | 3 | 3 |
