Description
Round-bottom flask 50 ml narrow neck borosilicate glass is a classic laboratory vessel for heating, distillation, reflux and collection work under standard wet-chemistry conditions. Fabricated from borosilicate glass 3.3, it combines chemical resistance with good thermal stability for everyday preparative and analytical use. The flask offers a nominal volume of 50 ml (0,05 l), a body diameter of 51 mm and an overall height of 105 mm, with a single medium-length narrow neck of 22 mm diameter finished with a beaded rim for secure seating of stoppers or adapters. The Enghals geometry supports straightforward connection to condensers, distillation heads and clamps while helping to limit evaporative losses. Supplied in packs of 10 pieces from manufacturer Witeg, these round-bottom flasks suit organic synthesis, solvent recovery, teaching laboratories and general research workflows that require durable, reusable glassware. Compatible with common heating baths, mantles and laboratory stands, the beaded-rim narrow-neck design provides a practical balance of access, mechanical strength and thermal performance for routine distillation and reaction setups.
This article is part of Round-bottom flasks, in Beakers & flasks. See also Flat-bottom flasks.
Key features
- Pack size: 10 pc(s)
- Nominal volume: 50 ml (0,05 l)
- Material: Borosilicate glass 3.3
- Neck type: Narrow neck (Enghals)
- Flask diameter: 51 mm
- Height: 105 mm
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Questions about Flasks, round bottom, medium length, 50
What is this article?
Flasks, round bottom, medium length, 50 is the article on this page. Luminix Health distributes Witeg 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.
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The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.