Description
Kjeldahl flask 500 ml NS 19/26 is a classic round-bottom digestion flask intended for nitrogen determination and related wet-chemical procedures. Manufactured from DURAN tubing in borosilicate glass 3.3, it offers the thermal and chemical resistance required for repeated heating and acid digestion. The nominal volume is 500 ml (0,5 l) and the neck is finished with a standard ground joint NS 19/26, ensuring compatibility with common condensers, adapters and stoppers. The pear-shaped body promotes efficient boiling and sample mixing while the long neck reduces the risk of bumping losses. Supplied in packs of 10 pieces, the flasks are ready for routine laboratory use in food, feed, environmental and general analytical laboratories. This glassware from manufacturer Witeg combines proven geometry with high-quality borosilicate construction for reliable performance in Kjeldahl and similar digestion workflows.
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: 500 ml
- Material: Borosilicate glass 3.3
- Joint size: NS 19/26
- Construction: DURAN tubing
- Product type: Kjeldahl flask
Recently viewed
You may also like
Browse related categories
Category
Sub-category
Catalogue
Brand
Questions about Flasks Kjeldahl, 500 ml, made from DURA
What is this article?
Flasks Kjeldahl, 500 ml, made from DURA 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.
How does ordering and shipping work?
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.
Which other categories should I open?
The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.