Description
Pear shape flasks, DURAN®, with standard ground joint 29/32 and a 250 ml capacity are laboratory glass vessels designed for preparative work, heating, stirring and connection to standard ground-joint apparatus. The pear-shaped body concentrates liquid toward the base, supporting efficient mixing and visual observation of contents during synthesis, distillation set-ups and general sample handling. These flasks belong to the range of round flasks and flasks with ground glass joints used across organic chemistry, analytical preparation and teaching laboratories. Supplied as 1 pc from manufacturer Lenz, each unit is ready for bench use or integration into multi-neck assemblies via the NS 29/32 joint. The DURAN® glass construction provides the clarity needed to monitor reactions and colour changes, while the defined 250 ml working volume suits medium-scale procedures and intermediate storage of solutions. With a unit weight of 0,130 kg, the flask remains practical to clamp, transfer and clean in routine lab workflows. It fits standard laboratory glassware systems where reliable conical joints and a stable pear profile are required for everyday experimental work.
This article is part of Round-bottom flasks, in Beakers & flasks. See also Flat-bottom flasks.
Key features
- Pack size: 1 pc
- Product type: Pear shape flask
- Glass type: DURAN®
- Ground joint: NS 29/32
- Capacity: 250 ml
- Weight: 0,130 kg
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Questions about Pear shape flasks, DURAN®, standard ground joint 29/32, 250 ml, 1 unit(s)
What is this article?
Pear shape flasks, DURAN®, standard ground joint 29/32, 250 ml, 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.