Description
Round-bottom flask 100 ml with three necks is a clear laboratory vessel with a centre neck NS 24/29 and two side necks NS 14/23 set at 20°. Made from borosilicate glass 3.3, it offers the thermal and chemical resistance expected in distillation, synthesis and multi-connection reaction work. The 100 ml (0,1 l) nominal volume suits small-scale preparative setups where a condenser, dropping funnel or thermometer must be fitted at the same time. The spherical base promotes even heat distribution on heating mantles or oil baths and supports efficient stirring. This three-neck design from manufacturer Witeg belongs to the classic ground-joint flask range used as distillation, receiver or reaction flasks. Net weight is 0,07 kg. Supplied as one piece, the flask mates with standard NS glassware and is intended for routine organic and general laboratory applications requiring durable multi-neck borosilicate apparatus.
This article is part of Round-bottom flasks, in Beakers & flasks. See also Flat-bottom flasks.
Key features
- Pack size: 1 pc
- Nominal volume: 100 ml
- Number of necks: 3
- Centre neck: NS 24/29
- Side necks: NS 14/23 angled 20°
- Material: Borosilicate glass 3.3
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Questions about Round bottom flask 100 ml three necks CN ST 24/29
What is this article?
Round bottom flask 100 ml three necks CN ST 24/29 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.
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.

