Description
DURAN® glass stopper, amber, with standard ground joint NS 29/32 and octagonal head is a semi-hollow stopper made of borosilicate glass 3.3 for securely closing glassware such as flasks, separatory funnels or reagent bottles fitted with ground joint necks. The precision standard taper ground glass joint creates a tight, leak-proof seal; grease is advised for heating or vacuum work. Featuring an octagonal head for easy handling, this stopper from manufacturer Duran/DWK Life Sciences provides UV protection through external colour application, combined with long-lasting durability and strong chemical resistance of the amber tint. Constructed exclusively from glass components, it is well suited to storing aggressive materials. Typical applications include the storage of light-sensitive reagents, pharmaceuticals and chemicals, air-sensitive reagents and chemicals, as well as hygroscopic solids, granules and powders. When pairing with soda-lime glass bottles, ensure the temperature difference between bottle and stopper does not exceed 30 °C to avoid sticking. Pack size is one piece with a net weight of 0,065 kg.
This article is part of Ground-joint glass stoppers, in Stoppers, caps & closures.
Key features
- Pack size: 1 pc
- Material: Borosilicate glass 3.3
- Colour: Amber
- Joint size: NS 29/32
- Head shape: Octagonal
- EAN: 4032051321663
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Questions about DURAN® Glass Stopper, amber, with standard ground joint, octagonal
What is this article?
DURAN® Glass Stopper, amber, with standard ground joint, octagonal 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.