Beschrijving
Flat-bottom flask 100 ml NS 19/26 is a clear laboratory standing flask designed for chemical reactions, sample preparation and heating applications. It provides a nominal volume of 100 ml together with a standard ground joint NS 19/26 on a medium neck, enabling reliable coupling to condensers, dropping funnels and other jointed apparatus. Outer diameter measures 64 mm and height is 105 mm, offering a balanced, stable profile on the laboratory bench. The flask is produced from borosilicate glass 3.3 by Witeg, combining thermal resistance with broad chemical compatibility for routine solvent and reagent handling. Clear glass walls permit continuous visual monitoring of mixtures, colour development and phase separation. The flat bottom allows free-standing use without an additional cork or silicone ring. Packaged in units of 10 pieces, this flat-bottom flask is well suited to distillation trains, reflux reactions, intermediate storage and general preparative workflows that demand a durable ground-glass interface. Its borosilicate construction supports repeated temperature cycling under standard laboratory conditions.
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
- Ground joint: NS 19/26
- Neck type: Medium neck
- Outer diameter: 64 mm
- Height: 105 mm
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Questions about Vlakbodemkolf 100 ml ST 19/26
What is this article?
Vlakbodemkolf 100 ml ST 19/26 is the article on this page. Luminix Health distributes Witeg 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.