Description
Round-bottom flask 25 ml NS 19/26 Economy is a clear-glass laboratory vessel made from borosilicate glass 3.3 for everyday distillation, reaction and receiving applications. The flask carries a standard ground joint NS 19/26, an outer diameter of 41 mm and a height of 75 mm, combining a compact profile with the spherical body geometry that promotes even heating of the 25 ml working volume. Clear borosilicate construction permits straightforward observation of colour changes, boiling behaviour and phase separation. Supplied in packs of 10 pieces with a net weight of 0,025 kg per flask, this Economy version provides a cost-conscious choice for routine organic work, solvent recovery and teaching experiments. The single-neck design from manufacturer Witeg mates directly with common NS 19/26 condensers, still heads and adapters, allowing rapid assembly of distillation trains or reflux setups. Suitable for use with heating mantles or baths when properly supported, the flask functions as a reliable distillation flask, ground-joint reaction vessel or receiving flask across general laboratory environments.
This article is part of Round-bottom flasks, in Beakers & flasks. See also Flat-bottom flasks.
Key features
- Pack size: 10 pc(s)
- Volume: 25 ml
- Joint size: NS 19/26
- Material: Borosilicate glass 3.3
- Glass type: Clear glass
- Outer diameter: 41 mm
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Questions about Round bottom flask 25 ml ST 19/26
What is this article?
Round bottom flask 25 ml ST 19/26 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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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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The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.