Description
Round-bottom flask, 20000 ml, socket NS 45/40 is a single-neck laboratory vessel produced from borosilicate glass 3.3 featuring a centre neck and NS 45/40 ground joint. Providing a nominal volume of 20 l and a net weight of 3,600 kg, the flask is designed for distillation, reaction and collection applications requiring large liquid capacities in chemical and pharmaceutical laboratories. The round-bottom form promotes uniform heating when employed with heating mantles or oil baths, and the borosilicate glass 3.3 construction offers high thermal-shock resistance together with broad chemical durability. Supplied as one piece, this vessel from manufacturer Rettberg mates reliably with complementary ground-joint glassware through the precise NS 45/40 socket, enabling stable connection of condensers, adapters and receivers. Typical uses encompass large-scale solvent recovery, fractional distillation and receiving duties for substantial process volumes. The single centre-neck layout eases apparatus assembly and cleaning, contributing to efficient laboratory operations. Durable materials and construction support repeated thermal cycling and routine handling in both research and production-support settings.
This article is part of Round-bottom flasks, in Beakers & flasks. See also Flat-bottom flasks.
Key features
- Pack size: 1 pc
- Nominal volume: 20 l
- Material: Borosilicate glass 3.3
- Joint size: NS 45/40
- Neck type: Centre neck
- Number of necks: 1
- Technical Information Sheet:
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Questions about Round bottom flask, 20000 ml, socket size 45/40
What is this article?
Round bottom flask, 20000 ml, socket size 45/40 is the article on this page. Luminix Health distributes Rettberg 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.