Description
Round-bottom flask 25 ml NS 19/26 is a clear borosilicate glass 3.3 laboratory flask intended for distillation, reaction and receiving duties in chemical and analytical workflows. It features a single medium neck with standard ground joint NS 19/26, an outer diameter of 41 mm and an overall height of 75 mm, giving a compact footprint while retaining the classic spherical shape that supports uniform heat distribution. The nominal volume of 0,025 l suits small-scale organic synthesis, solvent concentration and fraction collection. Clear glass construction enables continuous visual inspection of the contents. Packed in units of 10 pieces and weighing 0,025 kg net per flask, the item is practical for stocking teaching labs and research benches. Produced by manufacturer Witeg from borosilicate glass 3.3, the flask offers the thermal shock resistance and chemical durability expected for routine heating, cooling and vacuum work when used with compatible NS 19/26 accessories. It serves equally well as a distillation flask, ground-joint reaction vessel or receiving flask in standard laboratory assemblies.
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
- Neck type: Medium neck
- Material: Borosilicate glass 3.3
- 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.