i bought it online after seeing journal on here. just search for tiresias mist not sure about ppm but i know it works. and i got it for under $20 shipped!
https://www.rollitup.org/auto-flowering-strains/548016-auto-feminized-seed-crop.html this is what made me get it and i have had same results.
i started spraying two weeks before flip then i think it was another week after flip till it was gone. then branch i sprayed continued to flower for a week then BAM flowers and nuts on same branch! so from start till nuts showed was 4 weeks.