Test CouplingThis robust connector you use to connect the tube seamlessly with your flexible hose to an arena or your ant farm. The coupling is suitable for almost all test tubes.
All ant species pass through the hole of the coupler. Do you have trouble getting the coupling of the flexible hose or a connector? Keep the flexible hose than in hot water for a short period of time. The tube will then be more flexible and is easy to insert in the coupling piece.