Description
Hollow stopper NS 34/35 brown tinted is an NS hexagonal hollow ground-joint stopper designed for standard laboratory glassware connections. Manufactured according to DIN 12252, the stopper features an NS 34/35 joint, an integrated drip tip and brown tinting for work with light-sensitive media. Its hollow body reduces mass while maintaining a dependable seal on corresponding ground joints of flasks, bottles and reaction vessels. Offered as a single piece with a net weight of 0,051 kg, it forms part of the plastic ground-joint stopper category used in chemical and analytical laboratories. The hexagonal head provides a secure grip for fitting and removal, including when protective gloves are worn. Brown colouration limits light exposure during storage or short reaction periods. This stopper from manufacturer Witeg supports organic synthesis, sample holding and routine wet-chemistry tasks that call for a robust NS 34/35 closure. The drip tip promotes controlled drainage on removal, helping keep benches and glassware cleaner during daily laboratory handling.
This article is part of Ground-joint glass stoppers, in Stoppers, caps & closures.
Key features
- Pack size: 1 pc
- Joint size: NS 34/35
- Type: NS hexagonal hollow stopper
- Standard: DIN 12252
- Feature: With drip tip
- EAN: 4045761291560
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Questions about ST-hollow stoppers hexagonal ST 34/35 br
What is this article?
ST-hollow stoppers hexagonal ST 34/35 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.