Description
Pointed flask 250 ml NS 19/26 Economy is a clear borosilicate glass 3.3 vessel for laboratory concentration, evaporation and sample recovery. The pointed base promotes efficient drainage and minimises residual hold-up, while the single standard ground joint NS 19/26 ensures compatibility with routine laboratory stoppers and glassware. Outer diameter measures 85 mm and height 145 mm, providing a stable, compact form factor suitable for heating mantles, stands and general bench use. The 250 ml nominal volume balances working capacity with manageable size for synthesis work-ups and analytical preparations. Clear glass allows continuous visual inspection of the contents during heating, cooling or solvent removal. Offered as an Economy variant from manufacturer Witeg and packed in units of 10 pieces, this flask is a practical choice for teaching laboratories, quality-control workflows and everyday organic chemistry where reliable borosilicate performance is required without unnecessary complexity.
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 19/26
- Variant: Economy
- Material: Borosilicate glass 3.3
- Outer diameter: 85 mm
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Questions about Flask pear shaped 250 ml ST 19/26 Economy
What is this article?
Flask pear shaped 250 ml ST 19/26 Economy 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.
What should I check before I order?
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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Luminix Health distributes this article from the heart of Europe. Articles in stock ship within 2–5 business days. Standard delivery is free from €250 excl. VAT. Cold-chain goods and dangerous goods under ADR are never included in that free delivery. The terms are in the Shipping Policy. The full brand index is on shop by brand. Who we are is on about us.
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The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.