A round bottom flask, also known as a Florence flask, is a type of laboratory flask with a rounded bottom, cylindrical body, and a wider neck compared to a standard round bottom flask. The wide neck design provides easier access for adding or removing materials and for cleaning the flask, making it a versatile and commonly used container in many laboratory settings.

The rounded bottom allows for better mixing and heating compared to a flat bottom flask, making it a popular choice for chemical reactions, distillation, and other heating applications. The flask’s shape, combined with its wide neck, allows for easy swirling of the contents and helps to minimize spillage.