Thanks Tim,

You're probably right - the operating parameters on the NSiR can be adjusted to produce the required average particle size, with actual size varying withn 10 or 15% of the mean..... though one SD would propbably be too large a range.

I was watching that Youtube video that Moi shared with us and 150 nM is what is being called the sweet spot - any larger and there is charging-cycle induced cracking and any smaller reduces energy capacity. So, as you so correctly say, to get 150 nM out of a produced batch of (say) 125 to 175 nM requires 'sifting' - but the question then is 'can you make a sieve with such tiny holes'? Mechanically, I dont think that's possible.

Perhaps Bernard could enlighten us?