Hi Anti-Gremlin,
My understanding, from the interview, was that sub 100 is the toughest thing to achieve. In fact, the engineers themselves didn't expect that to happen; the result exceeded the modeling.
The reason they're going to conduct further tests, with larger-sized particles is that each customer has a specific requirement, based on his/her particular applications. Some customers might want 200, some 300, ..... Bernard is not just thinking batteries; he plans to address multiple markets.
Regards,
Snowdrift