Description
Hollow stopper NS 19/26 brown tinted is a hexagonal hollow stopper for standard ground joints, manufactured to DIN 12252 and fitted with a practical drip tip. The brown tinting provides clear visual differentiation in multi-joint assemblies while the hollow construction keeps weight low without compromising mechanical stability. Intended for reliable closure of flasks, condensers and other laboratory glassware carrying an NS 19/26 joint, the stopper ensures a secure, leak-resistant seal under routine laboratory conditions. Supplied as a single piece with a net weight of 0,011 kg, it is easy to handle and store. The precisely ground joint surface mates smoothly with matching female joints, and the hexagonal head allows convenient finger grip during insertion and removal. This brown-tinted hollow stopper from manufacturer Witeg is a standard accessory for organic synthesis, distillation and general wet-chemistry set-ups where colour-coded stoppers help organise complex apparatus. Its compact design and drip tip minimise residual liquid carry-over when the stopper is withdrawn, supporting clean and efficient laboratory workflows.
This article is part of Ground-joint glass stoppers, in Stoppers, caps & closures.
Key features
- Pack size: 1 pc
- Joint size: NS 19/26
- Type: Hexagonal hollow stopper
- Feature: With drip tip
- Colour: Brown tinted
- Standard: DIN 12252
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Questions about ST-hollow stoppers hexagonal ST 19/26 br
What is this article?
ST-hollow stoppers hexagonal ST 19/26 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.