Superlady 18pcs 25x120mm Glass Flat Bottom Test Tube with Wooden Stopper

Good quality. I used these for an upper elementary chemistry class on our last day of school to make bubble solution to take home in. To my surprise, they didn't leak!

These are the perfect size for what I wanted. They seem durable, the cap fits well, and I’d buy them again from Superlady if/when I need more.

I use it for storing herbs and spices. Has good seal, and no worry about breakage.