Erlenmeyer flasks

A narrow neck limits evaporation, closes easily with a stopper and lets you swirl without spilling. A wide neck is easier to fill, to add solids to and to clean, and it suits cultures that need more air. Both come in borosilicate glass 3.3: the DURAN® narrow-neck flask, 5 l, 1 piece, and the DURAN® wide-neck flask, 200 ml, 1 piece. For heavy daily use, the DURAN® SUPER DUTY narrow-neck flask, 50 ml, has a reinforced rim. See all Erlenmeyer flasks.

Choose borosilicate glass when you heat, work with solvents or cycle between hot and cold, for example the DURAN® wide-neck flask, 200 ml, 1 piece. Choose plastic when breakage is the main risk. The transparent PP flask with leak-proof screw cap, 250 ml, comes as 1 piece. For ready-to-use culture work, the PETG flask with sealing cap, 500 ml, is supplied sterile in packs of 12 pieces. Check the heat and chemical limits of the plastic against your method before use.

As a working rule, fill an Erlenmeyer flask to about half its nominal volume when you swirl or stir. For shaken cultures, many labs keep the liquid to around a fifth of the flask so there is enough air, but your own protocol decides. Graduation marks are approximate; for an exact volume, use volumetric flasks. The PP screw-cap flask runs from 50 ml to 1000 ml, each 1 piece. Send your list to sales@luminixhealth.com for one quote.

A screw cap seals tight for storage and transport, as on the PP flask with leak-proof screw cap, 500 ml, 1 piece. A sealing cap opens quickly and keeps sterile contents closed, as on the PETG flask, 250 ml, sterile, 12 pieces. A ground joint connects the flask to a condenser or other glass apparatus: the DURAN® Erlenmeyer flask, 250 ml, joint 29/32, comes in packs of 10 pieces. Matching closures are in stoppers, caps and closures.

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.

This shelf belongs to Beakers & flasks, inside Labware. Luminix Health distributes this range for laboratory use.

The neighbouring shelves are Round-bottom flasks, Beakers, Reaction vessels & jacketed vessels, Flat-bottom flasks, Flasks (other) and Beaker & flask accessories. The category above this shelf is Beakers & flasks.

Luminix Health distributes this range from the heart of Europe. We deliver across the EU in two to five days if in stock. 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. Send a quote request, contact the team, or read who we are. The full brand index is on shop by brand.

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