Test Tube Stands — Foldable provides efficient and convenient storage options for laboratory test tubes. With a folding design, these stands allow for easy transport and compact storage, with various configurations to hold various-sized tubes. Their strong construction ensures stability, guarding against tube spillage and unexpected movements. These test tube stands are autoclavable, submersible racks with wire patterns that are stackable when empty. Built with a special blend of Polypropylene, the rack sinks in a water bath and maintains stability even in agitated water. These compact racks can be quickly and easily disassembled for cleaning. The base is designed as a grid with square openings and folds upside-down, with end bars that lock securely into the rack tops — ensuring a rigid, reliable structure during use. Key Features • Foldable design — easy transport and compact storage • Autoclavable — withstands standard sterilisation cycles • Submersible — sinks in water bath; stable in agitated water • Stackable when empty — saves bench and storage space • Quick-disassembly — easy to clean and maintain • Grid base with square openings — locking end bars for rigidity • Special-blend Polypropylene — chemical and temperature resistant • 5 size variants — from 13 mm micro tubes up to 30 mm extra-large tubes • Brand: PolyLab — trusted laboratory equipment manufacturer Specifications Property Detail Brand PolyLab Material Polypropylene (special blend) Design Foldable, stackable wire-pattern rack Base Type Grid base with square openings, folds upside with locking end bars Autoclavable Yes Submersible Yes — sinks in water bath; stable in agitated water Stackable Yes — when empty Disassembly Quick and easy — for cleaning Transport Compact fold for easy transport and storage Application Laboratory / Educational / Scientific Product Codes & Size Variants Product Code Tube Size Capacity Recommended Use P77901 13 mm 90 Tubes Micro/centrifuge & culture tube sets P77902 16 mm 60 Tubes Standard test tubes — general lab use P77903 20 mm 40 Tubes Medium test tubes — culture & reaction vessels P77904 25 mm 24 Tubes Large test tubes — volumetric / titration use P77905 30 mm 21 Tubes Extra-large / boiling tubes & sample vials All variants share the same foldable, autoclavable Polypropylene construction. Select the tube diameter that matches your laboratory's tube collection for the best fit and stability.