Description
Schlenk flask, 250 ml, with socket NS 29/32 is a precision laboratory vessel designed for air- and moisture-sensitive chemistry under inert atmosphere or vacuum. Fabricated from borosilicate glass 3.3, it incorporates a lateral high-vacuum PTFE valve with fine thread that enables accurate gas-flow regulation. The valve offers a continuous passage of 0–8 mm and an olive of Ø 9 mm for secure tubing connections to vacuum lines or inert-gas manifolds. This configuration supports classic Schlenk techniques including degassing, solvent transfer and reaction work-up while excluding oxygen and moisture. Supplied by manufacturer Rettberg, the flask has a nominal volume of 250 ml and a net weight of 0,149 kg, making it well suited to bench-scale synthetic, organometallic and materials-research applications. The standardized NS 29/32 ground joint ensures broad compatibility with condensers, dropping funnels and other jointed glassware. Packaged as 1 pc(s), the apparatus integrates readily into existing Schlenk lines used in academic and industrial laboratories focused on sensitive chemical transformations.
This article belongs on Round-bottom flasks, in Beakers & flasks. See also Flat-bottom flasks.
Key features
- Pack size: 1 pc(s)
- Nominal volume: 250 ml
- Joint size: NS 29/32
- Material: Borosilicate glass 3.3
- Valve type: Lateral HV PTFE valve (fine thread)
- Passage: 0–8 mm
- Technical Information Sheet:
Récemment consulté
Vous aimerez peut-être aussi
Browse related categories
Category
Sub-category
Catalogue
Brand
Questions about Nitrogen flask, 250 ml, socket size 29/32, PTFE high vacuum-valve
What is this article?
Nitrogen flask, 250 ml, socket size 29/32, PTFE high vacuum-valve is the article on this page. Luminix Health distributes Rettberg for laboratory use. It sits in Round-bottom flasks, inside Beakers & flasks, in Matériel de laboratoire.
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 Matériel de laboratoire.
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. 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.