Beschreibung
Receiving flask with cone NS 45/40, 2000 ml, vacuum-tight is a larger laboratory collection vessel fabricated from borosilicate glass 3.3. Offering a nominal volume of 2 l and a standard ground joint cone NS 45/40, it connects directly to rotary evaporators, distillation heads and vacuum manifolds for efficient collection of distillates and concentrates. The vacuum-tight design ensures reliable performance under reduced pressure during solvent removal and fractional distillation. Borosilicate glass 3.3 combines chemical durability with thermal stability suitable for everyday laboratory use. Delivered as a single piece with a net weight of 1,335 kg from manufacturer Rettberg, the flask is intended for preparative work, scale-up distillations and solvent recovery where a 2-litre receiver is required. It integrates into existing NS 45/40 glassware trains and supports both atmospheric and vacuum operations in organic synthesis, natural-product isolation and general process chemistry applications.
This article is part of Round-bottom flasks, in Beakers & flasks. See also Flat-bottom flasks.
Key features
- Pack size: 1 pc
- Nominal volume: 2 l
- Joint size: NS 45/40
- Material: Borosilicate glass 3.3
- Property: Vacuum-tight
- Technical Information Sheet:
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Questions about Collecting flask, cone size 45/40, 2000 ml, vacuum-resistant
What is this article?
Collecting flask, cone size 45/40, 2000 ml, vacuum-resistant is the article on this page. Luminix Health distributes Rettberg for laboratory use. It sits in Round-bottom flasks, inside Beakers & flasks, in Laborbedarf.
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 Laborbedarf.
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.
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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.