Patelai 4 Pieces Glass Round Media Storage Glass Bottles Borosilicate Media Bottles with GL45 Blue Screw Cap for Lab Water Reagent Liquids(1000 ml)

Of the four bottles shipped one was shattered, making this an expensive purchase. I wanted to use these as containers for my oil painting mediums and needed a sturdy bottle with a good air tight seal. The bottles are not that sturdy, certainly not as sturdy as lab quality glassware and I've worked with lab glassware for decades. The bottle seal is pretty mickey mouse, as it has a 'gasket' of sorts at the bottle lip that comes off easily and is a hassle if you're pouring out of the bottle and the gasket pops off. If you need a quality bottle with a quality seal, I'd look elsewhere.

After a tragic shelf collapse at my workbench, the three sample bottles I was using survived without issue at all (the forth was drying). I’m amazed because a lot of glassware that should have survived didn’t.Holds up to a drop from height and even with things falling on them.Great value - graduation markings close, seal well, and do not break when dropped.

Look like good quality would have given 5 star rating if the bottom would have been flat. Reason: I use magnetic stirrer and they would not work in these.

bootle seems fine, however so poorly packaged. 3 bottles arrived broken beyond belief. They could save money by packing them a little better. Seems its the major beef on here.

I purchased these for their intended purpose such as storing chemicals( hydrochloric acid etc.) But they do not provide a water tight seal at all and i feel unsafe using these, I need to trust the equipment I will be using is not going to leak under any circumstances, of course using chemicals that this bottle is not rated for is another store, if you have chemicals thay need to stay anhydrous and or need to he sealed as not to leak then I strongly advise against these