Description
Erlenmeyer flask, 250 ml, socket NS 45/40 is a conical laboratory vessel made from borosilicate glass 3.3, valued for its chemical resistance and thermal stability in everyday lab work. With a nominal volume of 0,25 l, the flask measures 85 mm in diameter and 140 mm in height, offering a stable footprint and comfortable handling during mixing, heating or sample preparation. The NS 45/40 ground-joint socket permits secure, interchangeable connections to condensers, adapters and other jointed glassware. Supplied by manufacturer Rettberg as a single piece with a net weight of 0,129 kg, this flask is well suited to titrations, culture procedures, solvent handling and general reagent work. Its classic conical profile promotes efficient swirling while reducing splash risk, and the durable borosilicate construction withstands repeated thermal cycling under standard laboratory conditions. Ideal for research, quality-control and teaching environments that require reliable, reusable glassware with a standardised joint.
This article is part of Erlenmeyer flasks, in Beakers & flasks.
Key features
- Pack size: 1 pc
- Nominal volume: 0,25 l
- Diameter: 85 mm
- Height: 140 mm
- Joint size: NS 45/40
- Material: Borosilicate glass 3.3
- Technical Information Sheet:
Recently viewed
You may also like
Browse related categories
Category
Sub-category
Catalogue
Brand
Questions about Erlenmeyer flask, 250 ml, socket size 45/40
What is this article?
Erlenmeyer flask, 250 ml, socket size 45/40 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.
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.