The Tube Rack is ideal for sample processing and the short or medium-term storage of samples. As it can withstand temperatures as low as -80°C, the rack can also be stored in a freezer. Tube racks are available for 0.5 ml test tubes as well as for 1.5 m-2.0 ml test tubes. Tube Racks can be stacked even when fully loaded and can be coupled to other racks on all sides. They are also UV-resistant and fully autoclavable and have labelling surfaces to assist identification. An economical alternative is the Micro Test Tube Holder 3821 for 20 micro test tubes of 1.5 ml-2.0 ml.