You can easily get carried away when trying to test things. For example, if you want to know if your car is working, you could measure the timing of the ignition and put the car on a dynamometer. Or ...

[DaveMakesStuff] uses 3D printed test tubes for plants and similar purposes, and he’s shared how to make them on a 3D printer, complete with different models each optimized for different nozzle sizes.

A medical supply company mistake threatens to complicate hundreds of drunken driving cases in Texas. An NBC 5 investigation has found blood alcohol level test tubes recalled by the manufacturer have ...