Description
BOLA round-bottom flask with GL necks is a transparent, pore-free laboratory vessel with a nominal volume of 250 ml, designed for distillation, collection and general reaction work under demanding chemical conditions. It features a central middle ground joint NS 29/32 together with two side necks carrying GL 18 threads, giving three necks in total for flexible connection of condensers, probes or tubing. The spherical body has a diameter of 88 mm and an overall height of 149 mm, while the net weight is 0,19 kg. Fabricated from perfluoroalkoxyalkane (PFA), the flask combines high chemical resistance with a smooth, non-porous surface that supports clean handling and easy inspection of contents. Compatible HT laboratory screw fittings can be used on the GL 18 side necks for secure, leak-resistant assemblies. Supplied as a single piece from manufacturer Bohlender, this multi-neck round-bottom flask suits preparative chemistry, solvent recovery and process sampling where glass alternatives are less suitable. The robust PFA construction and standardised joints make it a practical choice for routine and specialised laboratory setups requiring durable fluoropolymer glassware.
This article is part of Round-bottom flasks, in Beakers & flasks. See also Flat-bottom flasks.
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Questions about BOLA Round Bottom Flasks with Threaded GL Necks, 250 ml, 2 x GL18 1 Center socke
What is this article?
BOLA Round Bottom Flasks with Threaded GL Necks, 250 ml, 2 x GL18 1 Center socke is the article on this page. Luminix Health distributes Bohlender for laboratory use. It sits in Round-bottom flasks, inside Beakers & flasks, in Labware.
A round-bottom flask is the heating flask of a distillation or a reflux. The curved wall takes the heat, and the ground neck connects to a still head or a condenser. The joint size, not only the volume, has to match the rest of the set.
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 Round-bottom flasks. The catalogue is Labware.
Shelves beside this one are Beakers, Erlenmeyer flasks, 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. Delivery across Europe, two to five days when 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. 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.

