Steve Spangler Science Large Plastic Test Tubes & Rack

Great for propagating plants. The plastic is more durable than the little glass ones

Using for plant propagation after my son decided not to use for his project

Super cute and it comes with experiment ideas. The tray could be a little sturdier but I’m happy overall

I used this for a science-themed party decoration, so can’t speak to its function for other purposes. The plastic tubes are clear and thick. They held liquids and were transparent. The rim of one test tube was chipped when I took it out of the package, but the cap still screwed on. The caps are soda bottle caps—pretty cheap, and not what I expected, but they screw on just fine. The stand is durable enough.

I like these. They are well made and handy. The caps take a little getting used to, but once you understand how they work they are great. If you want to shake something up without spilling, then you need to screw the caps way, way down. That's what takes getting used to. As you screw the caps down you hit a place where they feel petty tight... But, they are not yet tight enough to stop from leaking when shaking. And then you discover that you can screw the caps down some more until they definitely stop tightening. Part of this is just breaking in the caps, they are a bit stiffer at first but become more pliable with use. But if you look at how the caps are made you will see that there is a point where the end of the test tube is rammed into a groove in the cap and that is really what stops the leaking, but it takes some effort to ram the test tube into the groove. They are not glass, they won't break. On the other hand they probably don't take much heat or a Bunsen burner, so their use is limited.

I needed test tubes for water samples for a college level class. These were perfect, so much so that the instructor kept my project for his office. Very easy to use, sturdy, the stand holds everything perfectly and it is just a very well made product. I recommend.

Came in and is missing a tube. Specifically chose this set for my 2nd graders science fair project because there were 6, and for just under $20 I’d expect to at least get all of the tubes. Stand isn’t very sturdy but it’s not completely falling apart.

Purchased these for bath time fun for my grand daughter that likes to use Epson salts to make potions in the tub. She has big fun.

3 out of 6 had chipped corners . Doesn’t effect the use but it was shipped in a bag not a box . Amazon was awesome to deal with to address the issue.