Test Tube Racks

Test tubes come in different diameters, so confirm the rack's hole size fits your tubes snugly without them wobbling or jamming.

A wooden rack with pegs doubles as a drying stand, letting you rinse tubes and set them upside down to air dry in the same place.

Larger racks with more holes suit bigger classes or batch work, while smaller racks are easier to store and move around for quick demonstrations.

Stackable wire or plastic racks save shelf space when empty, useful where storage room is limited.

Check the internal hole diameter against your test tube size, typically around 15 to 25mm, and choose a hole count that matches your typical batch or class size.

Yes, wooden racks with pegs let you place washed tubes upside down over the pegs so they drain and air dry without needing a separate drying rack.

Many polypropylene racks are autoclave-safe, but always check the manufacturer's rating first, since some plastics deform under high heat and pressure.

Make sure the rack sits on a flat, stable surface and that each tube is seated fully in its hole. Overloading a rack with heavier tubes on one side can also cause tipping.

Yes, many labs use wooden racks for drying and plastic racks for active experiments, since each material suits its specific task well.