Description
Round-bottom flask with standard ground joint, LBG 3.3, NS 29/32, 500 ml is a laboratory vessel made from borosilicate glass 3.3 for distillation, reflux, synthesis and receiving applications. It offers a nominal volume of 0,5 l and a standard ground joint NS 29/32, allowing secure coupling to condensers, dropping funnels, adapters and other jointed glassware. The round-bottom geometry promotes even heating and efficient mixing under laboratory heating conditions. Supplied from manufacturer Labbox as part of the LBG range, the flask is delivered as one piece with a net weight of 0,174 kg. Borosilicate glass 3.3 (LBG 3.3) provides the thermal and chemical resistance characteristic of this glass type for routine wet-chemistry work. The 500 ml capacity suits medium-scale organic preparations, solvent concentration and teaching experiments where a compact yet practical working volume is preferred. Classification among round-bottom flasks, ground-joint flasks, distillation flasks and receiving flasks reflects its broad utility on the bench. The standardised NS 29/32 joint supports interchangeability with common laboratory glassware assemblies used in research and educational settings.
This article is part of Round-bottom flasks, in Beakers & flasks. See also Flat-bottom flasks.
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Questions about Boiling flask round bottom, LBG 3.3, mouth 29/32, 500 ml
What is this article?
Boiling flask round bottom, LBG 3.3, mouth 29/32, 500 ml is the article on this page. Luminix Health distributes Labbox 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.
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The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.

