🔬 Elevate your experiments with style! Designed specifically for 16mm diameter test tubes or vials, ensuring a snug hold. Balanced bottom design minimizes the risk of tipping, keeping your experiments secure. Crafted from high-quality polypropylene, ensuring longevity and resilience. Experience the convenience of a 3-tier design that maximizes your workspace. Fully autoclavable for hassle-free sterilization and safety. 3-tier design 16mm tube compatibility Polypropylene material The AANIJ® Polylab plastic Test Tube Stand features a conventional 3-tier design with 62 holes, molded from durable polypropylene. Fully autoclavable and designed for 16mm diameter test tubes, it ensures stability and safety in your laboratory environment.