Laboratory support rings: compatible with an alcohol lamp; a simple device for chemical reactions in the lab; includes a lab stand clip. Clamp stand: a stand for laboratory equipment; commonly used in physical and chemical experiments. Stable construction: built with a standard iron frame for exceptional stability and reliability; supports test-tube clamps and chemistry funnel holders. Versatile functionality: the support stand is suitable for experiments, lab flask clamps, and chemistry lab stands. Use scenarios - Reaction setup with heating: use the support rings and stand clip to position vessels over an alcohol lamp for heating and controlled reactions in the lab. - Glassware handling and transfer: attach test-tube clamps and funnel holders to securely hold glassware such as test tubes, flasks, or funnels during filtration, distillation, or liquid transfer. - Educational demonstrations: reliable base for classroom demonstrations that involve multiple clamps and holders, providing a stable platform for clear observation of chemical processes.