Description
Schlenk tube, 250 ml, socket NS 14,5/23 is a graduated laboratory vessel designed for the manipulation of air- and moisture-sensitive substances under inert gas or vacuum. Fabricated from borosilicate glass 3.3, the tube features a lateral high-vacuum PTFE valve with fine thread offering an adjustable valve passage of 0 to 8 mm and an olive of Ø 8 mm for reliable tubing attachment. The standard NS 14,5/23 ground-joint socket permits straightforward connection to Schlenk lines and other ground-joint glassware. Clear graduation markings facilitate volume estimation during transfers, reactions and sample work-up. This Schlenk apparatus from manufacturer Rettberg suits synthetic chemistry, organometallic procedures and vacuum-line techniques that demand chemical resistance together with dependable vacuum performance. Borosilicate glass 3.3 delivers the thermal and chemical durability required for routine laboratory service, while the side-arm PTFE valve supports efficient inert-gas blanketing, solvent handling and storage under protective atmosphere. The 250 ml capacity provides a practical working volume for medium-scale preparations and is supplied as a single piece.
This article is part of Stopcocks & valves, in Tubing, hoses & fittings.
Key features
- Pack size: 1 pc
- Nominal volume: 250 ml
- Joint size: NS 14,5/23
- Material: Borosilicate glass 3.3
- Valve: Lateral HV PTFE valve 0-8 mm
- Olive diameter: Ø 8 mm
- Technical Information Sheet:
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Distillation & extraction glassware
Sub-category
Ground-joint glassware (other)
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Questions about Nitrogen tube, 250 ml, graduated, socket size 14,5/23,
What is this article?
Nitrogen tube, 250 ml, graduated, socket size 14,5/23, is the article on this page. Luminix Health distributes Rettberg for laboratory use. It sits in Ground-joint glassware (other), inside Distillation & extraction glassware, in Labware.
This is ground-joint glassware that is not a head, a condenser or a Soxhlet: receivers, blank joints, odd adapters. A ground joint is named by the wide end and the length, such as 29/32. Mismatched joints do not seal, even with grease.
Distillation separates liquids by boiling point. A condenser turns the vapour back into liquid: Liebig, coil and cold-finger shapes differ in how much cooling surface they offer. A still head and a column sit between the flask and the condenser. A Soxhlet extractor washes a solid again and again with the same solvent. Ground joints have a standard size, and the joint, not the flask, is what has to match. The pieces are indexed under ISO laboratory glassware.
Which category should I open next?
The category is Distillation & extraction glassware. The sub-category is Ground-joint glassware (other). The catalogue is Labware.
Shelves beside this one are Distillation heads, adapters & columns, Condensers and Soxhlet & extraction apparatus.
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.