Beschrijving
Two-neck round-bottom flask with centre neck NS 29/32 and parallel side arm NS 19/26 is a 100 ml borosilicate glass vessel intended for distillation, synthesis and receiving applications. It is produced from heat-resistant, durable borosilicate glass conforming to DIN 12394 and DIN 12392. A thick wall, heavy base and reinforced rim help prevent breakage during routine cleaning and transport. Perfectly ground NS necks with a smooth interior provide a reliable, leak-tight seal with matching standard taper joints. White enamel markings ensure clear identification on the laboratory bench. Supplied by manufacturer ISOLAB Laborgeräte, this compact flask combines a parallel side-neck layout with the main centre joint, allowing simultaneous connection of condensers, dropping funnels or temperature probes in small-scale setups. The 100 ml volume is well suited to micro- and mini-preparative organic work, solvent recovery and teaching experiments. Robust construction and precise ground joints make it a dependable component for multi-neck apparatus in research, education and quality-control laboratories.
This article is part of Round-bottom flasks, in Beakers & flasks. See also Flat-bottom flasks.
Key features
- Pack size: 1 pc
- Material: Heat-resistant borosilicate glass
- Centre neck: NS 29/32
- Side arm: Parallel NS 19/26
- Capacity: 100 ml
- EAN: 4250362625175
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Questions about flask - round bottom - two neck - parallel side arm - center neck : NS 29/32 -
What is this article?
flask - round bottom - two neck - parallel side arm - center neck : NS 29/32 - is the article on this page. Luminix Health distributes ISOLAB for laboratory use. It sits in Rondbodemkolven, inside Bekerglazen & kolven, in Labmateriaal.
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 Bekerglazen & kolven. The sub-category is Rondbodemkolven. The catalogue is Labmateriaal.
Shelves beside this one are Bekerglazen, Erlenmeyerkolven, Reactievaten & mantelvaten, Kolven met vlakke bodem, Kolven (overig) and Bekerglas- & kolfaccessoires.
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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The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.

