Round-bottom flask

Round-bottomed flask consist of a lower spherical portion and a cylindrical neck. They are made of Duran (glass) (formerly Jena glass ) prepared and standardized according to DIN / ISO Reaction vessels in the chemical industry. They are manufactured in various sizes (from 10 ml to 25 l ) and also as a multi-necked flask with straight or lateral necks. Also in brown glass made ​​round -bottomed flask occasionally used in the laboratory.

Other models:

  • Narrow neck and wide neck flask
  • Long-necked and short- necked flask
  • Flask with or without " touch" ( SGJ, spherical joints, etc.).

Round bottom flask with standard ground have many different core sizes in the laboratory. The most common, NS 29/32 is used to connect other glassware (eg, radiator ). In addition, in laboratory and industry round-bottomed flask be used with spherical joints, such as receiving flask for the distillate to rotary evaporators.

Round-bottomed flask may - in contrast to flat-bottomed flask ( eg, Erlenmeyer flask) - are put under vacuum, without the risk of an implosion could be. In addition, the round shape allows uniform heating.

Chemical reaction Chemistry Implosion (mechanical process)
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