Description
Erlenmeyer flask 250 ml Boro 3.3 is a narrow-neck conical flask with beaded rim, made from borosilicate glass 3.3 and white graduated for straightforward volume orientation. It offers a nominal volume of 250 ml (0,25 l), a height of 145 mm and a neck diameter of 34 mm, making it well suited to mixing, gentle heating and intermediate sample volumes in analytical and preparative laboratories. The conical shape supports effective swirling of liquids while the Enghals design limits evaporation and aerosol loss. Built to DIN ISO 1773, the flask provides standardised geometry for everyday glassware racks and heating setups. Available as a pack of 10 pc(s) from manufacturer Hirschmann, this Boro 3.3 Erlenmeyer flask serves chemistry, biotechnology and educational labs that need robust, chemically resistant glassware. The beaded rim reinforces the opening for stoppers or covers and improves handling safety. White graduation marks enable quick approximate readings during media prep, dilutions or reagent work. Choose this 250 ml narrow-neck model when a durable borosilicate glass 3.3 conical flask is required for routine wet-lab operations.
This article is part of Erlenmeyer flasks, in Beakers & flasks.
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Questions about ERLENMEYER FLASK 250 ML, NARROW NECK WITH RIM
What is this article?
ERLENMEYER FLASK 250 ML, NARROW NECK WITH RIM is the article on this page. Luminix Health distributes Hirschmann 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.
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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.

