Expansion Of Liquids Apparatus Science Labs Hoverlabs is Manufacturer, Exporter Supplier of Expansion Of Liquids Apparatus Product description: For demonstrating the different thermal expansions of various liquids.Comprising five bulb tubes mounted in a frame and supported in a water trough. The frame has a special sliding arrangement with clips hold glass bulbs with tubes. The bulbs can be easily removed and fixed and have a funnel&formation on top for easy filling..