Description
DURAN® Round-Bottom Flask, Narrow Neck, with Beaded Rim is a high-capacity laboratory flask with a nominal volume of 20 l fabricated from borosilicate glass 3.3. This size is not according to DIN ISO but follows ASTM E 1403. Bulbous vessels known as flasks function as additional universally applicable containers in the laboratory beside beakers. They serve for example in distillations or when heating liquids. Flasks are supplied in many variants: narrow and wide neck, with or without ground joint, as round-bottom or standing flasks. The suitable vessel together with its specific parts is chosen according to the application. Particular advantages encompass the geometry that allows very uniform heating and the burnt-in, permanently durable white print. Intended uses comprise operation in heating mantles, heating, and mixing of several components. This single narrow-neck model with beaded rim from manufacturer Duran/DWK Life Sciences accommodates substantial liquid volumes under controlled conditions. The round-bottom geometry secures even heat distribution vital for distillation and thermal work, while borosilicate glass 3.3 provides the chemical and thermal stability required for demanding laboratory environments and large-scale preparations.
This article is part of Round-bottom flasks, in Beakers & flasks. See also Flat-bottom flasks.
Key features
- Pack size: 1 pc
- Storage temperature: Standard
- Nominal volume: 20 l
- Material: Borosilicate glass 3.3
- Neck type: Narrow neck
- EAN: 4032051013278
- Technical Information Sheet:
Recently viewed
You may also like
Browse related categories
Category
Sub-category
Catalogue
Brand
Questions about DURAN® Round Bottom Flask Narrow Neck, with beaded rim
What is this article?
DURAN® Round Bottom Flask Narrow Neck, with beaded rim is the article on this page. Luminix Health distributes DWK Life Sciences 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.
How does ordering and shipping work?
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.