PVA test tube stoppers
£0.40 - £1.25
Ditch the messy cotton! These test tube stoppers are the perfect modern alternative for your ant keeping setups — available in both 15mm and 18–20mm sizes to fit standard test tubes.
✅ Main use: Replaces the traditional water cotton barrier in queen and founding setups — providing better airflow, less mould, and easier maintenance.
Also great for:
• Sealing test tubes securely during storage or transport
• Mounting feeding platforms like protein jelly
• Custom setups or DIY nests
• Allowing airflow while keeping ants safe
Durable, breathable, and easy to clean — ideal for new ant keepers and experienced sellers alike.