Description
Two-neck round-bottom flask with centre neck NS 29/32 and angled side arm NS 19/26 is a 500 ml laboratory vessel produced from heat-resistant, durable borosilicate glass according to DIN 12394 and DIN 12392. The dual-neck configuration features a central standard ground joint together with a side neck angled at 20°, allowing convenient multi-port access for distillation trains, reaction setups and collection work. Thick walls, a heavy base and a reinforced rim minimise breakage risk during cleaning, transport and routine handling. Precisely ground NS necks with smooth interiors deliver a dependable, leak-tight seal when mated with matching stoppers or adapters. White enamel markings remain clearly visible on the laboratory bench. Well suited to organic synthesis, larger-scale multi-neck assemblies and distillation duties, this flask from manufacturer ISOLAB Laborgeräte is supplied as a single piece and accommodates the thermal cycling typical of heating and cooling operations. Robust construction and standardised joints make it a practical vessel for everyday preparative chemistry.
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
- Centre neck: NS 29/32
- Side arm: NS 19/26, angled 20°
- Capacity: 500 ml
- EAN: 4250362624932
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Questions about flask - round bottom - two neck - angled side arm - center neck : NS 29/32 -
What is this article?
flask - round bottom - two neck - angled side arm - center neck : NS 29/32 - 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.