Description
Flat-bottom flask 500 ml NS 45/40 is a clear laboratory flask manufactured from borosilicate glass 3.3 for general chemical and preparative work. The vessel offers a nominal volume of 0,5 l, an outer diameter of 100 mm and an overall height of 170 mm, with a single medium neck finished as ground joint NS 45/40 for secure connection to condensers, adapters or stoppers. The flat base provides stable standing on the bench or hotplate without additional supports, while the borosilicate 3.3 glass delivers the thermal and chemical resistance expected in routine laboratory use. This stehkolben-style flask from manufacturer Witeg is supplied in a pack of 10 pieces, each with a net weight of approximately 0,142 kg, making it convenient for stocking teaching labs, quality-control suites and research benches. The generous NS 45/40 joint accommodates larger accessories and facilitates charging or sampling of viscous or solid-containing mixtures. Clear glass walls allow easy visual monitoring of contents, colour changes and phase separations during heating, mixing or storage operations.
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: 0,5 l
- Ground joint: NS 45/40
- Material: borosilicate glass 3.3
- Outer diameter: 100 mm
- Height: 170 mm
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Questions about Flat bottom flask 500 ml ST 45/40
What is this article?
Flat bottom flask 500 ml ST 45/40 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.
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.