StonyLab Glass 500ml Heavy Wall Borosilicate Glass Filtering Flask, Bolt Neck with Tubulation, 500ml

Does what it's designed for but I got the feeling the tubing attached could have come off easier.I think this is due to the grooves on the connector being a little sharp.4* out of 5* for a good product.

The media could not be loaded.  Excellent packaging, Quality thick glass, for professionnel lab, high heat resistant since its for hot filtration during recrystallization. A+++ I recommend it. (Remember to buy a rubber seal to get good suction during vacuum for best results)

StoneyLab Borosilicate 3.3 is adequate for a brilliant 5yr old's Chemistry Laboratory. Even with a watchful Gramps's 800 >1,800 degree Lab Gas 'bunsen burner'.