The flask is made up of glass. It is non- disposable in nature and has a wide mouth which makes cleaning the interior of the flask easy.
The flask is cylindrical in shape and has finely ground flanges which provide tight seal.
The maximum temperature (English) is 392 degree Celsius and the maximum temperature (metric) is 200 degree Celsius.
The heavy pressed construction covers have four openings which help to accommodate interchangeable standard taper joints. It allows quick assembly with condensers, stirrers and funnels.