Beschrijving
Kjeldahl flask with neck featuring an NS ground joint is laboratory glassware made from borosilicate glass 3.3, finished with a white inscription and supplied in a 1000 ml volume. The neck carries a socket ground joint NS29/32 for reliable coupling to matching conical joints on condensers, adapters and complementary ground-joint components used in digestion and distillation setups. Boro 3.3 glass provides chemical durability and thermal stability suited to repeated heating cycles in wet-chemical sample preparation. White inscription aids rapid visual identification of volume or laboratory markings during routine handling. The long-neck Kjeldahl geometry supports controlled boiling and vapour management typical of nitrogen determination and related analytical procedures. Offered as a pack of 2 pieces from manufacturer Hecht, this flask fits standard NS jointed glassware trains in analytical, quality-control and teaching environments. Combination of 1000 ml capacity, defined NS29/32 joint and robust borosilicate construction makes it a practical vessel for preparative chemistry and assay workflows that specify jointed Kjeldahl flasks.
This article is part of Round-bottom flasks, in Beakers & flasks. See also Flat-bottom flasks.
Key features
- Pack size: 2 pc(s)
- Product type: Kjeldahl flask
- Material: Borosilicate glass 3.3
- Volume: 1000 ml
- Ground joint: NS29/32
- Neck: with NS ground joint
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Questions about Kolven, Kjeldahl met slijpstuk, Boro 3.3, Capaciteit: 1000 ml, Slijpstuk: NS29/32
What is this article?
Kolven, Kjeldahl met slijpstuk, Boro 3.3, Capaciteit: 1000 ml, Slijpstuk: NS29/32 is the article on this page. Luminix Health distributes Hecht for laboratory use. It sits in Rondbodemkolven, inside Bekerglazen & kolven, in Labmateriaal.
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 Bekerglazen & kolven. The sub-category is Rondbodemkolven. The catalogue is Labmateriaal.
Shelves beside this one are Bekerglazen, Erlenmeyerkolven, Reactievaten & mantelvaten, Kolven met vlakke bodem, Kolven (overig) and Bekerglas- & kolfaccessoires.
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The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.