Speaking, I'd personally say 'a thousandth' or 'a tenth of a p.c'. Making use of 'a' as opposed to 'one particular' in stating it seems nicer. Further more, in exposition, 'a' is undoubtedly an indefinite posting, which indicates the speaker doesn't know the identity of the noun, in this case https://thcaflowerbulk62727.mpeblog.com/64382997/indicators-on-bulk-thca-flower-you-should-know