Description
Three-necked round-bottom flask, 20000 ml is a high-capacity multi-neck laboratory flask for large-volume reaction, distillation, and process set-ups that require several ground-glass ports at once. The vessel provides a centre neck 45/40 together with side necks 29/32; the side necks are angled, which eases mounting of condensers, addition funnels, sensors, or inert-gas lines around a crowded centre joint. Made from DURAN® glass and offered by manufacturer Lenz, it follows the classic round-bottom form used with heating mantles and standard jointed glassware. At 20000 ml, the flask supports preparative and pilot-scale work where a single large vessel is preferred over multiple smaller batches. It is supplied as one piece and weighs 4,700 kg, reflecting the substantial glass mass of a twenty-litre multi-neck flask. Defined NS sizes on centre and side necks simplify selection of matching stoppers, adapters, and accessories. Laboratories specifying large three-neck round-bottom flasks with angled side necks and DURAN® construction will find this 20000 ml model aligned with those joint and capacity requirements.
This article is part of Round-bottom flasks, in Beakers & flasks. See also Flat-bottom flasks.
Key features
- Pack size: 1 pc
- Product type: Three-necked round-bottom flask
- Capacity: 20000 ml
- Centre neck: 45/40
- Side necks: 29/32, angled
- Material: DURAN®
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Questions about Three-necked round-bottom flask, 20000ml, Centre neck 45/40, side neck 29/32
What is this article?
Three-necked round-bottom flask, 20000ml, Centre neck 45/40, side neck 29/32 is the article on this page. Luminix Health distributes Lenz 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?
The technical information on this page is the manufacturer's sheet. Read that, not a rewritten specification.
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.