Hello! I'm pretty much a beginner in the world of fountain pens and ink, and could use a bit of help. I have two bottles of ink from Giovanni Gnocchi. Both are 'new'/unopened. The smaller one, with red ink, has a few tiny bits floating in it. Is it still usable? The other bottle is a 250ml glass bottle with a cork stopper, still sealed with wax. I'm really eager to try the purple ink in it, but am worried about whether the ink will stay okay in there once opened. Would it be better to put it in a glass bottle with screw cap? Any info you might have about these inks in general would be appreciated, thank you! ❤ kind regards, Janine