Description
Round flasks made from DURAN® transparent glass offer a 2000 ml capacity with a wide NS 45/40 standard ground joint for secure coupling to large condensers, distillation heads and transfer adapters. The round-bottom design distributes heat evenly during boiling, reflux and concentration steps common in environmental analysis and sample preparation. Clear glass walls give an unobstructed view of reaction mixtures, solvent levels and precipitate formation throughout the process. Delivered as one unit with a mass of 0,50 kg, the flask integrates readily into existing jointed glassware trains. Manufactured by Lenz, it is intended for laboratories that need durable borosilicate vessels with a larger neck diameter for higher vapour throughput or easier charging of solids. The NS 45/40 joint geometry supports stable, vacuum-compatible assemblies used in Soxhlet setups, rotary-evaporator receivers and multi-neck distillation configurations. Transparent DURAN® construction combines chemical resistance with optical clarity for everyday preparative and analytical work requiring a 2-litre round flask.
This article is part of Round-bottom flasks, in Beakers & flasks.
Key features
- Pack size: 1 pc
- Product type: Round flask
- Material: DURAN® transparent glass
- Capacity: 2000 ml
- Ground joint: NS 45/40
- Weight: 0,50 kg
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Questions about Round flasks,DURAN®, transparent glass, 2000 ml, NS 45/40, 1 pc
What is this article?
Round flasks,DURAN®, transparent glass, 2000 ml, NS 45/40, 1 pc 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.
