Description
Round-bottom flask in borosilicate glass 3.3 with medium neck and standard ground joint NS 29/32 is a classic laboratory vessel for distillation, reaction and collection work. The spherical body holds a nominal volume of 2000 ml and is supplied without stopper, giving a clear working opening for charging, sampling or connection of further apparatus. The medium neck carries a Normschliff standard ground joint NS 29/32, allowing secure, interchangeable coupling to condensers, still heads, adapters and other jointed glassware. Borosilicate glass 3.3 combines chemical resistance with good thermal-shock behaviour, making the flask suitable for heating, cooling and reflux cycles typical of organic synthesis and preparative chemistry. It fits the usual roles of round-bottom, ground-joint, distillation and receiving flasks on the bench. Offered as a single piece from manufacturer Hecht, the flask supports everyday laboratory workflows where reliable geometry, joint compatibility and visual observation of contents are required during mixing, evaporation or product isolation.
This article is part of Round-bottom flasks, in Beakers & flasks. See also Flat-bottom flasks.
Key features
- Pack size: 1 pc
- Product type: Round-bottom flask
- Material: Borosilicate glass 3.3
- Capacity: 2000 ml
- Neck: Medium neck with standard ground joint
- Ground joint: NS 29/32
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Questions about Round bottom flasks, borosilicate glass 3.3, with standard ground joint, without
What is this article?
Round bottom flasks, borosilicate glass 3.3, with standard ground joint, without is the article on this page. Luminix Health distributes Hecht for laboratory use. It sits in Ballons à fond rond, inside Béchers & fioles, in Matériel de laboratoire.
A round-bottom flask is the heating flask of a distillation or a reflux. The curved wall takes the heat, and the ground neck connects to a still head or a condenser. The joint size, not only the volume, has to match the rest of the set.
A beaker is an open working vessel: easy to pour, poor as a measure. An Erlenmeyer flask has a flat base and a conical wall so a liquid can be swirled without climbing out. A round-bottom flask is for heating under a condenser, because the heat meets a curved wall and the joint at the neck connects to the rest of the glassware. Borosilicate is the glass that survives the temperature change. These forms are listed under ISO laboratory glassware.
Which category should I open next?
The category is Béchers & fioles. The sub-category is Ballons à fond rond. The catalogue is Matériel de laboratoire.
Shelves beside this one are Béchers, Fioles Erlenmeyer, Récipients de réaction & récipients à double enveloppe, Fioles à fond plat, Fioles (autres) and Accessoires pour béchers & fioles.
What should I check before I order?
When this page shows a safety data sheet, use that manufacturer file. Hazard text does not belong in the sales description. For a pack size, a grade or a certificate that is not on the page, send a quote request or contact the team.
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Which other categories should I open?
The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.