Description
Rotilabo®-standard ground glass joint stoppers are black polyethylene (PE) laboratory plugs sized for the conical joint 29/32. They close standard ground-glass necks on flasks, adapters and other jointed glassware used in synthesis, sample storage and routine analytical work. The PE body is lightweight yet robust enough for repeated bench handling, offering a practical alternative to glass stoppers where impact resistance and simple cleaning matter. Each pack contains 5 pc(s) and has a total weight of 0,104 kg, making it convenient to keep several spares at the workstation. The 29/32 conical profile matches common NS joint dimensions, helping maintain a secure fit during mixing, short-term holding or transport of vessels. These stoppers sit in the Rotilabo® labware line from manufacturer ROTH SELECTION and belong to the plugs and clamps segment for laboratory glass, vessels and consumables. Black colouring aids quick visual identification among mixed joint sizes. Suitable for teaching laboratories, quality-control benches and general chemistry setups that rely on interchangeable ground joints, they support tidy, reliable sealing without adding unnecessary bulk to everyday glassware assemblies.
This article is part of Ground-joint glass stoppers, in Stoppers, caps & closures.
Key features
- Pack size: 5 pc(s)
- Product type: Ground glass joint stopper
- Material: PE
- Colour: black
- Conical joint: 29/32
- Weight: 0,104 kg
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Questions about Rotilabo®-standard ground glass joint, stoppers, PE, black, conical joint 29/32
What is this article?
Rotilabo®-standard ground glass joint, stoppers, PE, black, conical joint 29/32 is the article on this page. Luminix Health distributes Carl Roth 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?
The technical information on this page is the manufacturer's sheet. Read that, not a rewritten specification.
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.