Holey Cap Set

The Holey Cap Set is a practical, classroom-ready accessory designed to support a wide range of sensor-based experiments. This set of four plastic caps allows sensors-such as temperature probes, pH electrodes, and oxygen sensors-to be held securely in standard beakers, enabling precise and consistent data collection. Each cap is fitted with a corresponding O-ring and designed to fit beakers of 100 mL, 150 mL, 250 mL, and 800 mL capacities. Whether students are conducting chemical reactions, testing pH levels, or measuring dissolved gases, the Holey Cap Set helps reduce human error and ensures reliable sensor alignment. The caps are durable and colour-coded for easy identification during busy practical sessions, and their snug fit reduces the risk of spills or sensor damage. By promoting hands-free data capture, the Holey Cap Set encourages students to focus on experimental design and result interpretation, making it a valuable support tool in any science classroom or lab.

Educational Benefits

• Ensures sensor stability for more accurate measurements.
• Supports hands-free experiments and reduces handling errors.
• Improves consistency and repeatability of investigations.
• Promotes focus on data analysis rather than sensor positioning.
• Enhances laboratory safety by reducing spill and breakage risk.

Classroom Ideas

• Use during temperature monitoring in chemical reactions.
• Pair with oxygen sensors to measure gas exchange in biological samples.
• Test pH variations in soil, liquids, or buffering solutions.
• Conduct long-duration experiments that require fixed probe positions.
• Demonstrate correct laboratory technique for sensor setup.

Specifications

• Includes four plastic caps in different colours (Yellow, Blue and Red).
• Fits beaker sizes: 100 mL, 150 mL, 250 mL, and 800 mL.
• Supplied with O-rings for secure fit.
• Made from durable plastic for repeated use.
• Designed for use with sensors like temperature, pH, and oxygen probes.
• Beakers not included.
• Suitable for secondary and tertiary science labs.