Description
Screw cap, PP, natural, GL 28 is a polypropylene laboratory closure finished in natural colour and fitted with a GL 28 thread for secure sealing of matching laboratory bottles and vessels. Made from polypropylene (PP), the cap supports everyday handling of reagents, samples and media where a dependable screw closure is required. The natural finish gives a clean, uncoloured appearance that works well with transparent or translucent bottle systems. This screw cap from manufacturer lab-o-plastix is autoclavable up to a maximum of 121 °C, supporting steam sterilisation workflows in microbiology and general laboratory practice. Before autoclaving, the closure must be unscrewed and placed on the bottle rather than left tightly fastened, allowing safe pressure equalisation during the cycle. Supplied as a single piece, the GL 28 polypropylene screw cap is intended for resealing bottles after opening, temporary storage and routine transfer operations. Its GL 28 thread matches standard laboratory bottle necks used across chemical, analytical and life-science environments, helping maintain sample integrity during handling and short-term storage on the bench or in storage areas.
This article is part of Screw caps & closures, in Stoppers, caps & closures.
Key features
- Pack size: 1 pc
- Material: Polypropylene (PP)
- Colour: Natural
- Thread: GL 28
- Autoclavable: up to max. 121 °C
- Sterilisation note: Unscrew before autoclaving and place on bottle
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Questions about Screw cap, PP, natural, GL 28
What is this article?
Screw cap, PP, natural, GL 28 is the article on this page. Luminix Health distributes lab-o-plastix for laboratory use. It sits in Screw caps & closures, inside Stoppers, caps & closures, in Labware.
A screw cap has a thread and a liner. The thread has to match the bottle. The liner has to survive the liquid: a pulp liner fails in a solvent that a PTFE-faced liner ignores. The colour of the cap is not the specification.
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 Screw caps & closures. The catalogue is Labware.
Shelves beside this one are Rubber & silicone stoppers, 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. 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.