Hello,

I have two questions.

1. Can U reuse naphtha infinitely?

2. When using a small glass syringe for the pull that if their was any gunk accidentally sucked up that the gunk sunk to the bottom of the syringe. Could one just squirt out the tiny bit of gunk then use the rest?

Probably wouldnt use solvent that's been sitting around for a few months that was already used but its possible.

If you're using sodium hydroxide I wouldn't take that chance unless you re-x

Yes but I don't do that but you could if you wanted to and yes just skirt it out , unless you filter through cotton wool !!