Water Bath Polypropylene Spheres – Energy‑Saving Thermal Insulation

The Water Bath Polypropylene Spheres are a simple yet highly effective solution for improving the efficiency, safety, and performance of open laboratory water baths. Forming a floating blanket of lightweight, hollow spheres, they sit neatly on the surface of the water, creating an insulating layer that significantly reduces heat and vapour loss.

A single layer of spheres covers approximately 91% of the liquid surface, trapping air in the small gaps between spheres. This trapped air enhances insulation, delivering energy savings of up to 75% while helping maintain more stable bath temperatures. By reducing evaporation and splashing, the spheres also contribute to a cleaner and safer working environment.

Manufactured from durable polypropylene, the spheres are chemically resistant, reusable, and easy to handle, making them an ideal accessory for school, college, and professional laboratories alike.

Key Features

• Creates a floating thermal insulation layer for open water baths
• Reduces heat loss – energy savings of up to 75%
• Single layer covers 91% of the liquid surface
• Reduces steaming – vapour loss reduced by up to 90%
• Helps minimise vapours and splashing
• Improves operator safety around hot water baths
• Durable, reusable polypropylene construction
• Product reference: 1664

Recommended Quantities per Water Bath Size

For effective coverage and insulation, the following pack quantities are recommended:

• 2L / 2.5L / 4L baths – 1 pack
• 8L / 14L baths – 2 packs
• 22L / 28L baths – 4 packs

Ideal for School Science Lessons & Laboratories

Water Bath Polypropylene Spheres are ideal for use in KS3, GCSE, and A‑Level Biology and Chemistry laboratories, helping to support safe, efficient practical work involving heated water baths. They are particularly useful for:

• Maintaining stable temperatures during enzyme investigations
• Reducing evaporation in extended heating experiments
• Improving laboratory safety around hot water
• Lowering energy consumption in teaching labs
• Supporting technicians in maintaining efficient, well‑managed equipment

Simple to use yet highly effective, these Polypropylene Water Bath Spheres are an essential accessory for improving performance, safety, and energy efficiency in educational science laboratories.