Or maybe I made a mistake in mine? I'll also need to check my notes. At 0.5% I taste it fine. 1% is already darn close to too much. 2%, have not tried but I know it would blow my socks off lol.
Actually when you think of it, a 10% solution of the 10% Rustica dilution comes down to 1% of raw Rustica in your final vape. It doesn't sound too high on the face of it.... By the same token, a 2% solution of the 10% amounts to just 0.2% of raw Rustica in your final mix. I am seriously puzzled why some consider 0.2% as being too high. That is why I am thinking there might be an error in calculations - mine or theirs
As for using filters, you should be OK since they are routinely used in Naturally Extracted Tobaccos - TA being a NET as well.
But you can minimize your particles by preparing your Rustica with Pure Grain Alcohol rather than just PG.