Description
DURAN® pear-shaped flask with NS 14/23 is a high-quality laboratory glassware item produced from borosilicate glass 3.3 and optimised for small-volume chemical work. With a nominal capacity of 50 ml, the characteristic conical shape gathers limited sample quantities at the base, facilitating efficient reactions, distillations and extractions that would be less practical in larger round-bottom vessels. The precision-ground standard joint NS 14/23 delivers a secure, gas-tight interface to complementary components such as columns, thermometers, dropping funnels and condensers. Permanent white enamel markings remain legible throughout extended laboratory service. This single-neck flask from manufacturer Duran/DWK Life Sciences is suitable for heating modest amounts in oil baths or mantles, controlled evaporation of liquids and convenient clamping to laboratory stands. Thermal shock resistance combined with excellent chemical durability ensures dependable performance in research, analytical and preparative environments where precise handling of restricted volumes is essential.
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: 50 ml
- Joint size: NS 14/23
- Material: Borosilicate glass 3.3
- EAN: 4032051027602
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Questions about DURAN® Pear Shape Flask, with standard ground joint
What is this article?
DURAN® Pear Shape Flask, with standard ground joint 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. Delivery across Europe, two to five days when in stock. 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.