Description
Two-neck round-bottom flask with centre neck NS 24/29 and parallel side arm NS 19/26 offers a 250 ml working volume in heat-resistant, durable borosilicate glass manufactured to DIN 12394 and DIN 12392. A thick wall, heavy base and reinforced rim minimise breakage risk during cleaning and transport, while precisely ground NS necks with a smooth interior deliver a dependable leak-tight seal for multi-joint assemblies. White enamel markings remain clearly visible under laboratory lighting. The parallel side neck permits concurrent attachment of condensers, dropping funnels or inert-gas lines beside the main centre joint, enabling compact distillation and reaction configurations. Available as a single piece from manufacturer ISOLAB Laborgeräte, this flask supports medium-scale synthetic, preparative and analytical work that requires two standard taper connections. It is appropriate for use as a round-bottom, ground-joint, distillation or receiving flask in research, quality-control and teaching environments where joint integrity and mechanical robustness are priorities.
This article is part of Round-bottom flasks, in Beakers & flasks. See also Flat-bottom flasks.
Key features
- Pack size: 1 pc
- Material: Borosilicate glass
- Capacity: 250 ml
- Centre neck: NS 24/29
- Side arm: NS 19/26 parallel
- EAN: 4250362625090
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Questions about flask - round bottom - two neck - parallel side arm - center neck : NS 24/29 -
What is this article?
flask - round bottom - two neck - parallel side arm - center neck : NS 24/29 - is the article on this page. Luminix Health distributes ISOLAB 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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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.