Description
Erlenmeyer flask, 50 ml, socket NS 14,5/23 is a conical laboratory vessel engineered for mixing, heating, culturing and temporary holding of liquids across chemical, biotechnological and analytical procedures. Constructed from borosilicate glass 3.3, the flask offers superior chemical durability and thermal-shock resistance, enabling repeated heating, cooling and sterilisation cycles. The ground joint socket of size NS 14,5/23 guarantees a reliable, standardised connection to a wide range of complementary glassware such as condensers, adapters and stoppers. Nominal volume is 50 ml (0,05 l), diameter 51 mm and height 85 mm, striking a balance between working volume and bench-space efficiency. Net weight is 0,032 kg. Supplied as one piece from manufacturer Rettberg, this Erlenmeyer flask finds extensive use in titrations, buffer and media preparation, small fermentations and routine sample processing. The classic conical profile allows thorough mixing by swirling without spillage, while the restricted neck minimises evaporation and contamination risk. Uniform glass quality and precise joint geometry ensure dependable performance in research, educational and industrial quality-control laboratories.
This article is part of Erlenmeyer flasks, in Beakers & flasks.
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Questions about Erlenmeyer flask, 50 ml, socket size 14,5/23
What is this article?
Erlenmeyer flask, 50 ml, socket size 14,5/23 is the article on this page. Luminix Health distributes Rettberg for laboratory use. It sits in Erlenmeyer flasks, inside Beakers & flasks, in Labware.
An Erlenmeyer, or conical, flask has a flat base and a narrowing wall so a liquid can be swirled. It is the ordinary culture and titration flask. A baffled wall is a different article, used when the swirl must turn the liquid over.
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 Erlenmeyer flasks. The catalogue is Labware.
Shelves beside this one are Round-bottom flasks, Beakers, 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.
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The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.

