Description
Lamella stoppers for test tubes ID=12–13 mm in neutral colour are polyethylene closures engineered for secure, leak-proof sealing of laboratory test tubes. Large flanges rest firmly against the tube wall while the ribbed, conical profile ensures a reliable fit that resists seepage during handling, mixing or short-term storage. Colour-coded stoppers support fast visual identification of tube contents in multi-sample workflows. Packaged as 100 pieces, these non-sterile plugs from manufacturer ISOLAB Laborgeräte are intended for routine chemistry, biology and quality-control benches that use standard glass or plastic tubes with an inner diameter of 12–13 mm. The polyethylene material combines chemical resistance suitable for many aqueous media with easy insertion and removal, reducing the risk of incomplete closure or tube damage. Their fluted design delivers consistent seating without excessive force, making them practical for high-throughput sample preparation and everyday laboratory organisation where dependable plastic stoppers are required.
This article is part of Rubber & silicone stoppers, in Stoppers, caps & closures.
Key features
- Pack size: 100 pc(s)
- Material: Polyethylene
- Suitable for: Test tubes ID 12–13 mm
- Colour: Neutral
- Design: Ribbed conical with large flanges
- EAN: 4250362631978
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Questions about stoppers for tubes - flange - for 12/13 mm tube diameter - P.E - clear
What is this article?
stoppers for tubes - flange - for 12/13 mm tube diameter - P.E - clear is the article on this page. Luminix Health distributes ISOLAB for laboratory use. It sits in Rubber & silicone stoppers, inside Stoppers, caps & closures, in Labware.
A rubber or silicone stopper is pushed into a mouth. The size number corresponds to a top and bottom diameter. Silicone survives higher temperatures and more autoclave cycles. Natural rubber is attacked by oils and by some solvents.
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 Rubber & silicone stoppers. The catalogue is Labware.
Shelves beside this one are Screw caps & closures, Ground-joint glass 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. Delivery across Europe, two to five days when in stock. 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.
