Description
Hexagonal glass stopper, borosilicate clear, NS 29/32 is a hollow laboratory stopper manufactured from heat-resistant, durable borosilicate glass in accordance with DIN 12252. It is intended for reliable sealing of flasks and other ground-joint apparatus fitted with nominal size NS 29/32. The hexagonal flat head prevents the stopper from rolling on the bench and thereby reduces the risk of breakage during handling. A tapered, round-shaped body with an integrated drip tip at the lower end returns adhering liquid cleanly into the flask, supporting accurate work and minimising sample loss. The clear glass version allows unrestricted visual inspection of contents and is suitable for general analytical and preparative chemistry. Supplied in packs of 10 pieces from manufacturer ISOLAB Laborgeräte, these stoppers provide convenient stock for teaching, quality-control and research laboratories. Hollow construction keeps weight manageable while borosilicate glass delivers the thermal shock resistance and chemical durability expected in everyday laboratory workflows with aqueous solutions, organic solvents and routine heating applications.
This article is part of Ground-joint glass stoppers, in Stoppers, caps & closures.
Key features
- Pack size: 10 pc(s)
- Material: Borosilicate glass
- Joint size: NS 29/32
- Colour: Clear
- Design: Hexagonal flat head with drip tip
- EAN: 4250362631787
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Questions about stopper - glass - clear - hexagonal - 29/32
What is this article?
stopper - glass - clear - hexagonal - 29/32 is the article on this page. Luminix Health distributes ISOLAB for laboratory use. It sits in Ground-joint glass stoppers, inside Stoppers, caps & closures, in Labware.
A ground-glass stopper matches a ground neck of a stated joint size. A 14/23 stopper does not seal a 29/32 neck. The stopper is part of the flask's seal, and a chip on the grind is a leak.
A closure is the part that decides whether a bottle stays shut and whether the contents attack the seal. A ground-glass stopper matches a ground neck. A screw cap needs the right thread and a liner that survives the liquid. Rubber and silicone stoppers push into a mouth. The liner, not the colour of the cap, is the chemical choice. The vessels they close are indexed under ISO laboratory glassware.
Which category should I open next?
The category is Stoppers, caps & closures. The sub-category is Ground-joint glass stoppers. The catalogue is Labware.
Shelves beside this one are Screw caps & closures, Rubber & silicone stoppers, Lids & seals and Closures (other).
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.