Description
Erlenmeyer flask with graduation manufactured from borosilicate glass 3.3 and fitted with an NS glass stopper provides a 250 ml working volume for general laboratory applications. The conical body supports efficient swirling and mixing of liquids, while permanent graduation marks allow approximate volume reading during preparation or transfer steps. A ground joint sleeve NS 19/26 with matching glass stopper ensures secure closure for storage or reactions. This flask from manufacturer Hecht is supplied in packs of six pieces and suits chemistry, biochemistry and teaching laboratories that require durable conical vessels. Borosilicate glass 3.3 offers the thermal and chemical resistance expected for routine heating, cooling and aqueous work. Clear walls permit visual monitoring of contents, and the graduated scale assists rough volumetric tasks without a separate measuring cylinder. Compatible with standard NS 19/26 ground-glass accessories, the flask integrates easily into existing lab glassware sets for sample handling, media preparation and general wet-chemistry procedures.
This article is part of Erlenmeyer flasks, in Beakers & flasks.
Key features
- Pack size: 6 pc(s)
- Volume: 250 ml
- Material: Borosilicate glass 3.3
- Stopper: NS glass stopper
- Joint size: NS 19/26
- Graduation: With graduation
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Questions about Flasks, erlenmeyer, (conical) narrow neck with socket, with glass stopper, Boro
What is this article?
Flasks, erlenmeyer, (conical) narrow neck with socket, with glass stopper, Boro is the article on this page. Luminix Health distributes Hecht 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.
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.

