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Instrumental conditions used in the study to perform waterborne asbestos analysis.
| Membrane portion number | 1 | 2 | 3 |
|---|---|---|---|
| Analytical laboratory | Lab 1 | Lab 2 | Lab 2 |
| Electron beam energy | 20 kV | 15 kV | 15 kV |
| Emitter | W filament | W filament | W filament |
| Metal layer for conductivity | gold | graphite | gold |
| Image resolution | 15 pixel/µm | 32 pixel/µm | 32 pixel/µm |
| Minimum visible detail | 0.067 µm | 0.031 µm | 0.031 µm |
