Beschrijving
Receiving flask, 250 ml, bowl KS 35/25 is a laboratory collection vessel optimised for use with rotary evaporators and distillation apparatus. Produced from borosilicate glass 3.3, it delivers reliable chemical resistance and thermal stability under typical laboratory conditions. The KS 35/25 spherical ground joint bowl ensures a precise, vacuum-tight fit to matching evaporator components. Offering a nominal volume of 0,25 l, a single neck and a net weight of 0,107 kg, the flask balances capacity with ease of handling for medium-volume solvent recovery. The rounded shape promotes efficient condensate collection and straightforward emptying. This receiving flask from manufacturer Rettberg is supplied as one piece and is well suited to organic synthesis, purification and general laboratory evaporation workflows requiring durable, standardised glassware.
This article is part of Flasks (other), in Beakers & flasks.
Key features
- Pack size: 1 pc
- Nominal volume: 0,25 l
- Material: Borosilicate glass 3.3
- Joint size: KS 35/25
- Number of necks: 1
- Technical Information Sheet:
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Questions about Collecting flask, 250 ml, spherical joint cup size 35/25
What is this article?
Collecting flask, 250 ml, spherical joint cup size 35/25 is the article on this page. Luminix Health distributes Rettberg for laboratory use. It sits in Flasks (other), inside Beakers & flasks, in Labmateriaal.
These are the flasks that are not a plain beaker, Erlenmeyer, round bottom or flat bottom: odd shapes, special necks, flasks defined by a use. The volume and the joint, if there is one, still have to match the setup.
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 Flasks (other). The catalogue is Labmateriaal.
Shelves beside this one are Round-bottom flasks, Beakers, Erlenmeyer flasks, Reaction vessels & jacketed vessels, Flat-bottom flasks 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.
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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.
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.