Description
Round-bottom flask 250 ml NS 29/32 amber is a single-neck borosilicate glass vessel for distillation, collection and reaction work with light-sensitive substances. Fabricated from borosilicate glass 3.3, it features a medium neck finished with a standard ground joint NS 29/32 and a permanent brown tint that limits light exposure of the contents. Outer diameter measures 85 mm and height 140 mm, providing a practical 250 ml nominal volume for everyday laboratory heating and stirring setups. The amber colour is integral to the glass rather than a surface coating, ensuring lasting light protection through thermal cycling and washing. Available from manufacturer Witeg in packs of 10 pieces, these flasks serve well as distillation flasks, receiving flasks or reaction vessels in organic synthesis and solvent-recovery workflows. Borosilicate 3.3 delivers the chemical resistance and thermal-shock performance required in research and analytical laboratories. Net weight is 0,107 kg per flask. The single medium neck allows straightforward coupling to condensers, distillation heads and adapters while the NS 29/32 joint maintains a secure, interchangeable connection.
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: 250 ml
- Joint size: NS 29/32
- Material: Borosilicate glass 3.3
- Outer diameter: 85 mm
- Height: 140 mm
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Questions about Round bottom flask 250 ml ST 29/32 amber stained
What is this article?
Round bottom flask 250 ml ST 29/32 amber stained 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.