Preform Plastic Test Tubes
The ultimate classroom test tube! These "preform" test tubes are the early stage of a 2 liter soda bottle. They are virtually indestructable, dishwasher safe, and they are clear to let young scientists see everything that is going on inside. (all preforms have a very slight greyish tint) Caps are included.

Each large preform test tube measures approx. 5.75 inches (15cm) tall, and each holds about 2 ounces (60 ml.)