Description
Nitrogen tube with core, 25 ml is a laboratory glass vessel for inert-gas handling and closed ground-joint systems. Fabricated from DURAN® glass, it combines an NS 14/23 standard ground joint with a stopcock whose borehole measures 2,5 mm, enabling controlled gas passage during laboratory work. The integrated core supports nitrogen blanketing and sample protection in setups that use round flasks and other ground-joint glassware. Offered as a single piece with a weight of 0,158 kg, the tube fits small-scale preparative and analytical routines where a compact 25 ml working volume is required. This nitrogen tube from manufacturer Lenz is intended for research and routine laboratories that rely on standard NS 14/23 connections. DURAN® construction provides the chemical resistance and thermal behaviour expected of quality laboratory glassware, while the defined cock borehole supports reproducible gas flow regulation. The vessel integrates readily into existing glass assemblies for nitrogen lines, inert-atmosphere maintenance and related handling tasks without altering joint compatibility across the apparatus train.
This article is part of Distillation heads, adapters & columns, in Distillation & extraction glassware.
Key features
- Pack size: 1 pc
- Capacity: 25 ml
- Glass type: DURAN®
- Ground joint: NS 14/23
- Cock borehole: 2,5 mm
- Design: with core
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Questions about Nitrogen tube, with core, 25 ml, DURAN®, NS 14/23, cock borehole 2.5mm
What is this article?
Nitrogen tube, with core, 25 ml, DURAN®, NS 14/23, cock borehole 2.5mm is the article on this page. Luminix Health distributes Lenz for laboratory use. It sits in Distillation heads, adapters & columns, inside Distillation & extraction glassware, in Labware.
A still head, an adapter or a column is the glass between the boiling flask and the condenser. A Vigreux or packed column gives the vapour a surface so a closer-boiling mixture can separate. The joint sizes at both ends have to match the flask and the condenser.
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 Distillation heads, adapters & columns. The catalogue is Labware.
Shelves beside this one are Condensers, Ground-joint glassware (other) and Soxhlet & extraction apparatus.
What should I check before I order?
The technical information on this page is the manufacturer's sheet. Read that, not a rewritten specification.
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.

