50-Space Test Tube Rack for 13mm Outer Diameter Tubes, Sturdy Plastic Laboratory Organizer

Holds 50 standard 13 mm outer diameter test tubes neatly arranged

Made of durable plastic, the tube holder is acid and alkali resistant, corrosion resistant, and suitable for a variety of laboratory environments

Convenient installation and removal design simplifies cleaning and maintenance

Multiple holes are neatly arranged, making it easy to sort and organize test tubes and improving experimental efficiency