Visking Tubing – Size 3, 30 Metre Continuous Roll

This high‑quality Visking Tubing (Size 3) is supplied in a generous 30‑metre continuous roll, making it ideal for repeated use in school and college science laboratories. Commonly used to model dialysis and selective permeability, Visking tubing acts as an artificial, semi‑permeable membrane that allows the movement of small molecules while retaining larger solutes.

With an inflated diameter of approximately 15.9 mm and a flat width of 25–27 mm, this size is particularly versatile for demonstrating diffusion, osmosis, and biological transport processes. Its flexibility and ease of preparation make it suitable for a wide range of practical investigations in biology.

Key Features

• 30‑metre continuous length for extensive classroom use
• Size 3 Visking tubing – ideal for standard biology demonstrations
• Inflated diameter: approx. 15.9 mm
• Flat width: 25–27 mm
• Semi‑permeable membrane for dialysis and diffusion experiments
• Durable, easy to cut, and simple for students to handle
• Suitable for demonstrating a wide variety of biological processes

Ideal for School Science Lessons & Biological Investigations

Visking tubing is a staple resource in KS3, GCSE, and A‑Level Biology, allowing students to visualise and understand how membranes regulate the movement of substances. This Size 3 roll supports many classic experiments, including:

• Demonstrating diffusion and osmosis through a semi‑permeable membrane
• Simulating kidney dialysis and waste filtration
• Investigating molecular size and permeability
• Showing how concentration gradients drive movement across membranes
• Constructing dialysis models for extended or comparative experiments

Reliable, versatile, and essential for teaching core biological principles, this 30m roll of Visking tubing is an excellent addition to any school laboratory.