This single-neck round-bottom flask from Canrd is designed for standard laboratory synthesis, distillation, and reflux applications. Available in capacities ranging from 100 ml to 1000 ml, each variant features ground glass joints (19# or 24#) for secure connection with complementary glassware. The borosilicate glass construction ensures thermal and chemical resistance, making it suitable for routine heating and stirring processes in organic chemistry, materials research, or pharmaceutical development. With a straightforward single-neck design, it supports direct attachment of condensers, adapters, or thermometers, offering versatility in experimental setups while maintaining reliable performance under moderate vacuum or atmospheric conditions.