Description
Round-bottom flask 500 ml KS 35/20 is a medium-neck laboratory flask equipped with a spherical ground joint KS 35/20 for secure connection to compatible apparatus. Fabricated from uncoated clear borosilicate glass 3.3, the vessel offers strong resistance to thermal stress and chemical attack. It provides a nominal volume of 500 ml, an outer diameter of 105 mm and a height of 170 mm, making it practical for distillation, solvent collection and preparative work. Available in packs of 10 pieces from manufacturer Witeg, this single-neck round-bottom flask is intended for use as a distillation flask, receiving flask or general reaction vessel in chemical and analytical laboratories. The KS 35/20 spherical joint delivers a reliable seal with matching ground-joint components, while the rounded base supports even heat distribution and efficient stirring. Borosilicate glass 3.3 construction ensures durability under typical laboratory heating, cooling and reagent-exposure conditions, providing a dependable glassware option for workflows that require the KS 35/20 joint size.
This article is part of Round-bottom flasks, in Beakers & flasks. See also Flat-bottom flasks.
Key features
- Pack size: 10 pc(s)
- Nominal volume: 0,5 l
- Joint size: KS 35/20
- Outer diameter: 105 mm
- Height: 170 mm
- Material: Borosilicate glass 3.3
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Questions about Round bottom flask 500 ml S 35/20
What is this article?
Round bottom flask 500 ml S 35/20 is the article on this page. Luminix Health distributes Witeg 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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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.