Description
Round-bottom flask with NS 45/40 is a laboratory glass vessel with a nominal volume of 500 ml, intended for heating, boiling, distillation and general reaction work. The spherical body promotes even heat distribution when used with heating mantles or baths and supports swirling and mixing of liquids with reduced local hot spots compared with flat-bottom ware. A standard ground joint NS 45/40 gives a reliable, interchangeable connection to condensers, adapters, dropping funnels and other NS glassware in single- or multi-piece assemblies. Supplied in a pack of 10 pieces, the flasks suit teaching labs, research groups and routine wet-chemistry workflows that need consistent joint geometry and a 500 ml working volume. The design follows common European NS joint conventions, so the flasks integrate readily into existing glassware sets for organic synthesis, sample preparation and analytical procedures. These round-bottom flasks from manufacturer Dinkelberg are produced in the Czech Republic and are classified among laboratory materials for glass reaction vessels. They provide a practical, standardised option wherever NS 45/40 connectivity and a 500 ml capacity are required.
This article is part of Round-bottom flasks, in Beakers & flasks. See also Flat-bottom flasks.
Key features
- Pack size: 10 pc(s)
- Product type: Round-bottom flask
- Nominal volume: 500 ml
- Ground joint: NS 45/40
- Country of origin: Czech Republic
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Questions about Flask with round bottom, with SJ 45/40, 500ml, 10/PK
What is this article?
Flask with round bottom, with SJ 45/40, 500ml, 10/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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The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.