Visking Tubing – Size 5, 30 Metre Continuous Roll

This premium-quality Visking Tubing (Size 5) is supplied in a generous 30‑metre continuous roll, providing excellent value and flexibility for repeated use in school and college science laboratories. Visking tubing acts as an effective semi‑permeable membrane, making it ideal for demonstrating key biological processes such as dialysis, diffusion, and osmosis.

Size 5 tubing features a larger internal volume, with an inflated diameter of approximately 19.0 mm and a flat width of 31–33 mm. This makes it well suited for experiments that require more space for solutions, comparative investigations, or extended practical work. Durable, flexible, and easy to cut to length, this tubing is a reliable classroom essential.

Key Features

• 30‑metre continuous roll for extensive laboratory use
• Size 5 Visking tubing with increased diameter for larger‑scale experiments
• Inflated diameter: approx. 19.0 mm
• Flat width: 31–33 mm
• Functions as a semi‑permeable membrane to model dialysis and diffusion
• Easy to prepare, tie, fill, and cut
• Suitable for a wide variety of biology investigations

Ideal for School Science Lessons & Biological Investigations

This Size 5 Visking tubing is ideal for KS3, GCSE, and A‑Level Biology, offering students a hands‑on way to explore how substances move across membranes. Its larger diameter supports more complex or extended experiments and is particularly effective in:

• Modelling dialysis and selective permeability
• Demonstrating diffusion and osmosis through a semi‑permeable membrane
• Exploring molecular size and transport mechanisms
• Setting up multi‑variable investigations for coursework and practical assessments
• Creating dialysis bags with greater internal volume for long‑term experiments

Robust, versatile, and perfect for teaching core biological concepts, this 30m roll of Size 5 Visking tubing is an excellent addition to any school or college science laboratory.