So swim is in the middle of his first extraction. (Q21Q21's Vinegar/Lime A/B Extraction Tek)

after he completed the first naptha pull, he stored the rest of the (post-pull) MHRB in a bowl, covered by some generic plastic wrap. He left it covered overnight, and didn't remember until he woke up and saw that the underside of the plastic cover had a layer of drops of evaporated residual naptha that he realized that he wasn't supposed to use plastic, as the naptha may dissolve it and it would then contaminate the spice...

So over the course of 10-12 hours, swim is sure that plenty of naptha has evaporated and condensed onto the cover, then dripped back down, then evaporated again, and so on and so forth...

should he consider the rest of the MHRB mixture unsafe to continue extraction with? Has anyone else used saran/plastic wrap in this way?

thanks so much!

Avoid using it the next time.

What kind of plastic is saran wrap ?

You can take a few extra precaution steps to help eliminate any possible traces of plastic.

You can for example separate your naphtha pulls, then salt them (mixing them with dilute vinegar, doing 3x pulls), and then basing the vinegar and pulling with fresh solvent again, and end with a freeze precipitation isntead of evaporation (you can also do a recrystallization at the end).

Good luck!

are you able to cover it with a napkin if you dont got foil?