Description
Round-bottom flask with NS 45/40, 2000 ml provides a larger ground-joint interface for laboratory setups that demand robust connections and higher throughput of vapours or reagents. The 2000 ml spherical body is suited to heating, reflux, distillation and reaction work where even heat distribution and a stable round geometry matter. The NS 45/40 joint accommodates correspondingly sized condensers, adapters and accessories, making the flask a practical choice for preparative chemistry and process-oriented laboratory workflows. Delivered as six pieces per pack, the set supports parallel experiments or continuous use without constant restocking of single vessels. These flasks are offered by manufacturer Dinkelberg and originate from the Czech Republic. Clear marking of joint standard and nominal volume helps match the glassware to existing heating equipment, clamps and jointed assemblies. Suitable for synthetic chemistry, solvent handling and teaching or research environments that standardise on NS 45/40 connections for two-litre round-bottom flasks.
This article is part of Round-bottom flasks, in Beakers & flasks. See also Flat-bottom flasks.
Key features
- Pack size: 6 pc(s)
- Product type: Round-bottom flask
- Joint size: NS 45/40
- Capacity: 2000 ml
- Country of origin: Czech Republic
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Questions about Flask with round bottom, with SJ 45/40, 2000ml, 6/PK
What is this article?
Flask with round bottom, with SJ 45/40, 2000ml, 6/PK is the article on this page. Luminix Health distributes Dinkelberg 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.

