What the first facility needs
- A reproducible wet aerosol or fog population, with composition, temperature and humidity characterized.
- Wet-size measurement reaching the particles important to optical extinction, with quantified sampling losses and missing size tails.
- Calibrated upstream and downstream optics, adequate optical access and transit-aligned measurements.
- A defined flow field that can accommodate the proposed passive and powered collector geometry.
- Qualified high-voltage supervision, interlocks, emissions monitoring and a clear facility approval route.
The protocol proposes screening at 1, 2 and 4 m/s only where the apparatus and measurements can be qualified. A published facility capability does not establish that this specific experiment can be integrated there.