●This 50-hole test tube rack is expertly crafted from transparent laboratory-grade polystyrene, boasting a perfect blend of durability and lightweight portability for convenient lab and daily use (note: not autoclavable).

●Featuring a practical 3-layer structure with 2 sliding slots, the rack adopts a unidirectional slide-in design: slide the shelves in from one side, and the raised lip on the opposite side provides secure positioning to prevent slipping. Its tiered hole design further enhances stability—smallest holes at the bottom lock test tubes in place, with larger holes on the second and top layers for flexible placement. The transparent material ensures unobstructed visibility of internal test tubes, allowing you to quickly identify tube contents without removal, saving operational time.

●Cleaning is effortless thanks to the ultra-smooth polystyrene surface: simply wipe with a damp cloth or rinse directly under running water. Detachable components enable thorough cleaning of hard-to-reach areas, keeping the rack sanitary and well-maintained for long-term use.

●Versatile and multi-functional, this rack is ideal for laboratory test tube placement, ink sample storage, homemade chapstick crafting, lip balm storage, and securely holding all small cylindrical objects upright. It is a reliable and essential tool for labs, craft enthusiasts, and daily small-item organization, meeting diverse placement and storage needs with professional design and practical performance.