Description
Round-bottom flask with standard ground joint LBG 3.3, NS 29/32, 250 ml is a laboratory vessel made from borosilicate glass 3.3 for reliable use in chemical and preparative work. The spherical body and single neck with NS 29/32 standard ground joint support secure connections to condensers, adapters, and other ground-joint glassware in distillation, reflux, and collection setups. With a nominal volume of 0,25 l, this flask suits medium-scale reactions, solvent recovery, and sample handling where thermal and chemical resistance matter. Manufactured from borosilicate glass LBG 3.3 by Labbox, it offers the dimensional stability and clarity expected of everyday lab glassware. The net weight is 0,131 kg, making the piece easy to clamp, heat, and transfer on the bench or in a heating mantle. Supplied as a single piece, it fits standard laboratory inventories for teaching, research, and routine analytical workflows that rely on interchangeable ground joints and robust round-bottom geometry.
This article is part of Round-bottom flasks, in Beakers & flasks. See also Flat-bottom flasks.
Key features
- Pack size: 1 pc
- Material: Borosilicate glass 3.3
- Nominal volume: 250 ml
- Ground joint: NS 29/32
- EAN: 8434868005907
- GTIN: 08434868005907
- Technical Information Sheet:
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Questions about Boiling flask round bottom, LBG 3.3, mouth 29/32, 250 ml
What is this article?
Boiling flask round bottom, LBG 3.3, mouth 29/32, 250 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.