Glass Test Tubes with Rubber Stoppers 150mm x 20mm Pack of 10 and 1pcs Brush …

Raised a colony of Camponotus Pennsylvanicus in these tubes. Great quality. I will reuse these for years to come.

Clean, made well, perfect thickness to be durable. We used them in propagation racks.

I do ant keeping so I bought this and it works really well but the thing it comes with to clean it smells terrible when it gets wet but cleans it good

These test tubes are perfect for most things you would need them for. They are medium sized.They are sturdy and reusable; the glass isn't too thick but its not as thin as other tubes.Admittedly, I was worried to order something like this online but I couldn't beat the price.The contents were well-packed and nothing arrived broken!The rubber stoppers were stuck to the glass as if they were in the tubes for a long time.This wasn't a problem because I could spin the tube and unstick the stopper before trying to pull it out.It's still a snug fit and will work perfectly for my needs.The best thing that surprised me was how clean they were.I'll still rinse them before use but I won't have to run them through the gauntlet.

Great quality and value

This is an unbelievably bad product. These test tubes shipped with foam stoppers that were stuck so far into the tube that they couldn’t be removed. I managed to get one out, and it left some residue inside the neck of the tube that couldn’t be removed with any of five strong solvents I tried. The next one broke in my attempt to extract it. Why would anyone sell a product like this?

So far very impressed. My mailman threw them down On the concrete porch and they did not break, was very thankful. Cannot wait for science experiments.If I have a negative the stoppers reminds me of the spray foam.

Tubes are decent but rubber stoppers were stuck in them and broke three tubes trying to remove them.