Description
Round-bottom flask with standard ground joint, without stopper, is a laboratory vessel made of borosilicate glass 3.3 with white inscription according to DIN EN ISO 4797. This 250 ml flask features a socket ground joint NS 29/32 and is delivered without a stopper, allowing flexible closure or connection within jointed glassware systems. Borosilicate glass 3.3 is widely specified for laboratory flasks that must withstand typical thermal and chemical loads in routine analytical and preparative work. White inscription aids identification and volume-related marking on the bench. Available in packs of 10 pieces from manufacturer Hecht, these flasks integrate into standard assemblies for reactions, distillations, reflux and heating applications. Compliance with DIN EN ISO 4797 supports interchangeability with matching NS 29/32 cones, condensers and adapters. The round bottom favours uniform heating in mantles or baths and efficient mixing with magnetic stirrers. Suitable as general laboratory material for research, industrial quality control and educational environments requiring reliable jointed round-bottom flasks without stoppers.
This article is part of Round-bottom flasks, in Beakers & flasks. See also Flat-bottom flasks.
Key features
- Pack size: 10 pc(s)
- Material: Borosilicate glass 3.3
- Volume: 250 ml
- Ground joint: NS 29/32
- Inscription: White
- Standard: DIN EN ISO 4797
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Questions about Flasks, boiling, round bottom with socket, Boro 3.3, DIN EN ISO 4797, printing
What is this article?
Flasks, boiling, round bottom with socket, Boro 3.3, DIN EN ISO 4797, printing is the article on this page. Luminix Health distributes Hecht for laboratory use. It sits in Round-bottom flasks, inside Beakers & flasks, in Labware.
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 Beakers & flasks. The sub-category is Round-bottom flasks. The catalogue is Labware.
Shelves beside this one are Beakers, Erlenmeyer flasks, Reaction vessels & jacketed vessels, Flat-bottom flasks, Flasks (other) and Beaker & flask accessories.
What should I check before I order?
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The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.