Description
Receiving flask, 500 ml, bowl KS 35/25 is a single-neck laboratory vessel made from borosilicate glass 3.3 and fitted with a spherical joint bowl of size KS 35/25. Intended for use with rotary evaporators and comparable distillation systems, it offers a nominal volume of 0,5 l for reliable collection of distillates and condensates. The flask has a net weight of 0,163 kg and is supplied as 1 pc, providing a practical balance of capacity and handling ease in everyday laboratory work. Its KS 35/25 spherical joint ensures secure, vacuum-compatible connections typical of rotary evaporation setups. Produced by manufacturer Rettberg, the flask benefits from the chemical resistance and thermal stability inherent to borosilicate glass 3.3, supporting repeated heating and cooling cycles without compromising integrity. One neck simplifies assembly within multi-component glassware trains while the bowl-style joint facilitates quick coupling and decoupling. This receiving flask is well suited to solvent recovery, solution concentration, and purification workflows in organic synthesis, analytical chemistry, and process development laboratories where consistent joint geometry and durable construction are essential for efficient, reproducible results.
This article is part of Flasks (other), in Beakers & flasks.
Key features
- Pack size: 1 pc
- Nominal volume: 0,5 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, 500 ml, spherical joint cup size 35/25
What is this article?
Collecting flask, 500 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 Matériel de laboratoire.
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 Matériel de laboratoire.
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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The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.