@ Dragunov-21: As I mentioned in my post above, vaseline (also known as petroleum jelly) is far from being an inert substance, and with heat,
it can melt and mix with the material you're working with, especially organics and solvents. If you don't care about the purity of your reagents or
possible contamination, then go ahead, use lip balm (ugh!)...
But we stray from the topic, I have a bit of Laboy glassware and it's not too bad, actually nicely crafted, and a billion times better than the
"other" chinese cheap glassware... Bomex! Now THAT, is crap! |