Description
Kjeldahl flask 100 ml NS 19/26 is a ground-joint digestion flask intended for nitrogen determination and closed or semi-closed wet-chemical digestion setups. It offers a nominal volume of 0,1 l and is manufactured from DURAN tubing in borosilicate glass 3.3, combining chemical durability with the dimensional stability required for repeated heating cycles. The integrated NS 19/26 joint enables secure connection to condensers, adapters or distillation accessories, reducing vapour loss and improving containment during acid digestion and subsequent transfer steps. This configuration is particularly useful when methods call for controlled reflux, trapping of volatile components or direct coupling to Kjeldahl distillation apparatus. Supplied in packs of 10 pc(s) from manufacturer Witeg, the flask supports analytical workflows in food, feed, environmental and quality-control laboratories as well as educational practicals. Net weight is 0,066 kg per piece. Standardised joint size and borosilicate construction help laboratories maintain interchangeable glassware sets, streamline assembly of digestion trains and ensure consistent performance across routine Kjeldahl nitrogen assays and related preparatory chemistry.
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: 100 ml
- Material: Borosilicate glass 3.3
- Joint size: NS 19/26
- Construction: DURAN® tubing
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Questions about Flasks, Kjeldahl, 100 ml, made from DU
What is this article?
Flasks, Kjeldahl, 100 ml, made from DU 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.
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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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