Description
Schlenk receiving flask 500 ml NS 14/23 is a round collection flask designed for inert-atmosphere and vacuum work in synthetic chemistry. It features a straight angle Economy valve stopcock with PTFE spindle, a 3 mm bore and a lateral olive of 8 mm for secure tubing connection. The ground joint NS 14/23 allows direct coupling to standard Schlenk lines, condensers or distillation setups. Manufactured from borosilicate glass 3.3 by Witeg, the vessel offers the thermal and chemical resistance required for repeated heating, cooling and solvent handling. With a nominal capacity of 500 ml and a compact round body, it serves as a reliable receiving or storage flask during distillations, filtrations under inert gas and air-sensitive reagent transfers. The PTFE-spindle stopcock provides smooth, grease-free operation and a tight seal. Supplied as a single piece, this Schlenk receiving flask integrates readily into existing laboratory glassware trains for organic synthesis, organometallic chemistry and preparative work under controlled atmosphere.
This article is part of Round-bottom flasks, in Beakers & flasks. See also Flat-bottom flasks.
Key features
- Pack size: 1 pc
- Capacity: 500 ml
- Joint size: NS 14/23
- Material: Borosilicate glass 3.3
- Stopcock: Straight angle Economy valve with PTFE spindle
- Bore: 3 mm
Recently viewed
You may also like
Browse related categories
Category
Sub-category
Catalogue
Brand
Questions about Collecting flask Schlenk 500 ml ST 14/23 straight
What is this article?
Collecting flask Schlenk 500 ml ST 14/23 straight is the article on this page. Luminix Health distributes Witeg 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. 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.

