Description
Kjeldahl flask 50 ml borosilicate glass is a compact digestion flask for small-scale Kjeldahl nitrogen determination and related wet-chemical procedures. Made from borosilicate glass 3.3, it combines chemical resistance with thermal stability for routine acid digestions. The flask body has a diameter of 51 mm, an overall height of 200 mm, and a neck diameter of 22 mm, giving a practical geometry for micro and semi-micro sample volumes. Nominal volume is 0,05 l, making the vessel suitable when limited sample amounts or lower reagent consumption are preferred. Supplied in packs of 10 pieces from manufacturer Witeg, each flask has a net weight of 0,062 kg. The long-neck Kjeldahl form supports controlled boiling and reduces splash losses during digestion. This size is well suited to teaching laboratories, method development, food and feed testing with small aliquots, and analytical workflows that require durable borosilicate Kjeldahl flasks without a specified ground joint. Clear dimensional data help match the flask to heating blocks, stands, and existing laboratory setups.
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: 0,05 l
- Material: Borosilicate glass 3.3
- Flask diameter: 51 mm
- Height: 200 mm
- Neck diameter: 22 mm
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Questions about Flask Kjeldahl 50 ml boro
What is this article?
Flask Kjeldahl 50 ml boro 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.
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.
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Luminix Health distributes this article from the heart of Europe. Articles in stock ship within 2–5 business days. 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.
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The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.

