Glass.Ceramic heating, Movie Library Direct heating of water in test tubes Friday March 22nd, 2024 HEAT-TECH info This video shows a halogen glass rod heater inserted into water in a test tube and heated. Please check the following site for more information. Related page: Heating water in a test tube Drying water on glass slides No.1 Cold air cooling of test tubes No.11 Heating the upper part of the test tube No.21 Heating of test tubes Heating purified water on a silicon wafer Partial Melting of a Candle (Paraffin) Using Infrared Localized Heating No.1 Heating the liquid in the test tube