Description
Flat-bottom flask 500 ml NS 19/26 is a clear laboratory standing flask manufactured from borosilicate glass 3.3 for general chemical work that requires a stable base and a standard ground joint. With a nominal volume of 0,5 l and a medium neck finished to NS 19/26, the flask connects directly to condensers, adapters and other glassware sharing the same conical joint size. External diameter is 105 mm and overall height reaches 165 mm, giving a compact yet practical footprint on the laboratory bench while retaining sufficient working volume for heating, mixing and reaction procedures. Borosilicate glass 3.3 provides the thermal shock resistance and chemical durability expected in everyday laboratory use, including moderate heating applications. The flat bottom enables the vessel to stand securely without a cork ring or additional support. Clear glass construction allows continuous visual monitoring of contents and reaction progress. This standing flask from manufacturer Witeg is intended for teaching laboratories, research groups and quality-control environments that rely on standardised jointed glassware and is supplied in packs of 10 pieces.
This article is part of Flat-bottom flasks, in Beakers & flasks.
Key features
- Pack size: 10 pc(s)
- Material: Borosilicate glass 3.3
- Nominal volume: 0,5 l
- Joint size: NS 19/26
- Neck type: Medium neck
- Outer diameter: 105 mm
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Questions about Flat bottom flask 500 ml ST 19/26
What is this article?
Flat bottom flask 500 ml ST 19/26 is the article on this page. Luminix Health distributes Witeg for laboratory use. It sits in Flat-bottom flasks, inside Beakers & flasks, in Labware.
A flat-bottom flask stands on the bench without a cork ring, which a round-bottom flask will not do. It is for heating on a plate and for simple setups. It is a poorer shape than a round bottom for even boiling under vacuum.
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 Flat-bottom flasks. The catalogue is Labware.
Shelves beside this one are Round-bottom flasks, Beakers, Erlenmeyer flasks, Reaction vessels & jacketed vessels, 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.
How does ordering and shipping work?
Luminix Health distributes this article from the heart of Europe. Delivery across Europe, two to five days when in stock. 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.
Which other categories should I open?
The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.
