This 40-Place Tube Rack for 20mm Tubes arrives flat after buying to save on valuable storage space and is easy to assemble. It measures 9.6 in. long x 4.1 in. wide. The manufacturer constructs this test tube rack using polypropylene, making it durable. It's autoclavable up to 249 degrees Fahrenheit and is safe to use in a freezer, making it appropriate for holding test tubes during a wide range of experiments. This test tube tray comes in different colors, suitable for labeling and organizing your workspace. It's rust-resistant, corrosion-resistant and sinks in water baths.

• The polypropylene material increases durability
• It saves on space and is easy to assemble
• Labeling the colored test tube rack is easy