Lab Plastic 50 Wells Test Tube Rack For Different Diameter

The test tube rack is used to place test tubes, and sometimes it is also used to observe some experimental phenomena. It is the most basic experimental instrument in a chemical laboratory. This 50 Wells Test Tube Rack will hold your 12-13 or 15-17mm diameter test tube securely in place. It is great for holding tubes in rack securely in place when in a water bath. Each position is alpha numerically identified. Units can be anchored laterally to one another, thanks to two screws supplied with each rack.