Zhibang - Provette da laboratorio in plastica congelate con tappo a vite, 10 ml, provetta graduata per laboratori, scuole educative

These test tubes are exactly what I needed for my personal science projects. There are measurement ticks on the side, and the plastic is of good quality. Additionally, I love the rubber o-ring in the cap to keep a tight seal. I recommend.

I teach some cool summer science camps——Mad Scientist and Forensic Detective. The test tubes are a nice size, but the cabs are just a thin aluminum and if you screw them too tight , they will slip right off the thread so that is my one complaint with them.