Good Morning Traveler,,forgive me if I'm a little off here but its 6:48am here and I'm still waking up sipping my morning joe
First off,,with your information,,did you only use 35ml Naptha in 'Total'?
How much Naptha are you using per pull?
Did you allow your 'Mother Flask" to sit in hot/warm water bath for a few hours first?
Did u freeze/thaw your bark prior to extraction?
some of these things may not be necessary ,but I'm trying to get a more detailed idea of what u have going on first.
to answer your ? abut the Solvent in the Pyrex inside a Ziplock ,,well I'm not too sure to answer that 100%,,but I do know if you put some Cling Wrap or Saranwrap over the top nice and fit,it will not evap or stick to the wrap,,I do that and maybe here and there I will see a drop on the wrap,,but tiny as a grain of salt..
congrats on the success thus far and the spice on your pic looks great
Positive Vibes and Love,,,
Life is Love & Love is Life