Description
BOLA replacement glass parts NS 24/40 GL 25 are precision borosilicate glass components with a ground joint core and GL thread, intended as spare inserts for laboratory stirring closures and related apparatus. The standardised NS 24/40 taper joint provides a reliable seal with matching ground-joint glassware, while the GL 25 thread interfaces with compatible screw caps, connectors and fittings used throughout chemical, pharmaceutical and research laboratories. Made from chemically resistant borosilicate glass, the parts withstand typical laboratory solvents and moderate thermal stress, supporting dependable long-term use in reaction vessels, reactors and mixing setups. Each unit is supplied as a single piece with a net weight of 0,029 kg, offering a practical, lightweight spare that restores function without replacing an entire assembly. These BOLA glass parts from manufacturer Bohlender are suited to routine maintenance of stirring systems and other GL-threaded laboratory equipment where a secure joint-to-thread transition is required. Clear dimensional definition—NS 24/40 joint size paired with GL 25 thread—simplifies selection and ensures interchangeability with existing BOLA configurations and comparable laboratory glassware.
This article is part of Distillation heads, adapters & columns, in Distillation & extraction glassware.
Key features
- Pack size: 1 pc
- Product type: Replacement glass part for stirring closures
- Material: Borosilicate glass
- Ground joint: NS 24/40
- Thread: GL 25
- Design: Ground joint core with GL thread
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Distillation & extraction glassware
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Questions about BOLA Replacement Glass Parts, NS 24/40 GL 25 Borosilicate glass
What is this article?
BOLA Replacement Glass Parts, NS 24/40 GL 25 Borosilicate glass is the article on this page. Luminix Health distributes Bohlender 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?
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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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.

