Respiration Apparatus – Basic Inhaled & Exhaled Air Test Kit (KS3+)

This Respiration Apparatus provides a simple and effective setup for investigating the differences between inhaled and exhaled air. Designed for KS3 and above, the kit enables students to explore key biological concepts related to gas exchange, respiration, and the composition of air.

The apparatus includes two 150 × 19mm borosilicate glass test tubes, each supplied with a suitable stopper, along with two lengths of tubing for directing air through the system. Borosilicate glass offers excellent clarity, heat resistance, and durability, making it ideal for classroom demonstrations and student investigations.

Key Features

• Complete respiration test kit suitable for KS3 and above
• Includes two 150 × 19mm borosilicate test tubes for safe, clear observation
• Supplied with stoppers to create a controlled airflow path
• Two lengths of flexible tubing included for inhalation/exhalation tests
• Durable, reusable components ideal for repeated classroom experiments

Ideal for School Science Lessons & Practical Activities

Perfect for teaching key respiration concepts, this basic apparatus supports a wide range of KS3, GCSE, and introductory A‑Level biology activities. It is commonly used for:

• Comparing inhaled and exhaled air using indicators such as limewater
• Demonstrating carbon dioxide production during respiration
• Investigating the role of the lungs in gas exchange
• Supporting lessons on aerobic respiration and the respiratory system
• Developing practical skills in setup, observation, and accurate measurement

Simple, robust, and highly effective, this Respiration Apparatus helps bring key biological principles to life, enabling students to observe real evidence of gas exchange and respiration processes.