Review on Enhanced Productivity with Eisco Premium Wooden Holes 16 75 by Scott Channell

It was attractive, great price and didn't break. I'm not giving it 5 stars because interestingly the holes on the top post don't line up with the cut out for the bottom of the tube. Therefore, the test tube was sometimes tilted slightly. I don't think you can claim perfection at this price point. I would also like to say that I found out later that our elementary school does not accept glass test tubes. I don't think many schools will do that. My child did this at will and therefore did not receive the full rules of the science fair competition. Next year we will test diameters of plastic pipes or experiment in large plastic containers.