Description
Hollow stopper NS 29/32 brown tinted is an NS hexagonal hollow ground-joint stopper for sealing standard laboratory glassware. Produced to DIN 12252, it combines an NS 29/32 joint with a drip tip and brown tinting suited to light-sensitive work. The hollow construction keeps the stopper light while still providing a secure fit on matching taper joints of flasks, bottles and reaction vessels. Supplied as one piece with a net weight of 0,024 kg, the stopper belongs to the plastic ground-joint stopper range and is intended for routine chemical and analytical laboratory use. Its hexagonal head permits firm grip and easy removal, even when gloves are worn. Brown colouration helps reduce light transmission during storage or short-term reactions. This stopper from manufacturer Witeg is a practical choice for organic synthesis setups, sample retention and general wet-chemistry applications that require a reliable NS 29/32 closure. The drip tip assists controlled drainage when the stopper is removed, supporting clean handling in everyday laboratory workflows.
This article is part of Ground-joint glass stoppers, in Stoppers, caps & closures.
Key features
- Pack size: 1 pc
- Joint size: NS 29/32
- Type: NS hexagonal hollow stopper
- Standard: DIN 12252
- Feature: With drip tip
- Colour: Brown tinted
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Questions about ST-hollow stoppers hexagonal ST 29/32 br
What is this article?
ST-hollow stoppers hexagonal ST 29/32 br is the article on this page. Luminix Health distributes Witeg 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.