Description
DURAN® Polyethylene Stopper NS 24/29 is an ergonomic laboratory stopper intended for reliable sealing of volumetric flasks, mixing cylinders and standing bottles. Made from low-density polyethylene (LDPE), the stopper incorporates a cone fitted with several grooves that deliver optimal tightness and help minimise solvent evaporation during storage or preparation of solutions. Colour-coded inserts enable quick visual assignment of the NS size; the colour system matches that used on Keck™ clamps, supporting rapid identification in busy laboratory environments. A batch clock on the component records the production period (year and month), while the underside carries the material designation “PE04”. Supplied without a bottle, the stopper is offered by manufacturer Duran/DWK Life Sciences and is particularly suited to the preparation and storage of standard solutions, colour-coded organisation and prevention of evaporative losses. Its ergonomic profile simplifies opening and closing, improving handling safety and convenience in everyday analytical and preparative work. The pack contains ten pieces for convenient laboratory stocking.
This article is part of Ground-joint glass stoppers, in Stoppers, caps & closures.
Key features
- Pack size: 10 pc(s)
- Joint size: NS 24/29
- Material: Low-density polyethylene (LDPE)
- Design: Ergonomic with multi-groove cone
- Colour coding: Matches Keck™ clamp system
- EAN: 4032051308480
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Questions about DURAN® Polyethylen-Stopper
What is this article?
DURAN® Polyethylen-Stopper is the article on this page. Luminix Health distributes DWK Life Sciences 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.