Description
Double neck round flask, DURAN®, 1000 ml is a one-litre round-bottom laboratory flask equipped with two ground-glass necks for flexible multi-port configurations. The centre neck carries an NS 29/32 joint, while the parallel side neck is finished to the smaller NS 14/23 standard, allowing a main condenser or adapter on the centre and a compact addition funnel, gas line or probe on the side. Fabricated from DURAN® glass, the vessel is intended for synthesis, reflux, distillation and related preparative work where clear visibility and standard joint compatibility are required. The 1000 ml capacity supports larger batch reactions and solvent volumes typical of intermediate-scale organic chemistry and teaching laboratories. Offered as a single unit from manufacturer Lenz, the flask has a weight of 0,320 kg and mates with common ground-joint glassware. Parallel side-neck geometry keeps the apparatus footprint tidy on the bench or heating mantle. Suitable for workflows that combine heating, stirring, reagent addition and inert-gas blanketing through established NS joints.
This article belongs on Round-bottom flasks, in Beakers & flasks. See also Flat-bottom flasks.
Key features
- Pack size: 1 pc(s)
- Product type: Double neck round flask
- Glass type: DURAN®
- Capacity: 1000 ml
- Centre neck: NS 29/32
- Side neck: NS 14/23, parallel
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Questions about Double neck round flask, DURAN®, 1000 ml, side neck parallel NS 14/23, 1 unit(s)
What is this article?
Double neck round flask, DURAN®, 1000 ml, side neck parallel NS 14/23, 1 unit(s) 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.