Description
Screw cap in brown low-density polyethylene (LDPE) with GL 50 thread is a laboratory bottle closure intended for bottles that require both a secure GL seal and reduced light exposure. The brown LDPE body provides protection from UV rays and is suitable for light-sensitive liquids, supporting storage and handling of photosensitive reagents, standards and samples in routine laboratory practice. Thread size is GL 50, ensuring compatibility with matching GL-neck laboratory bottles used across many bottle systems. Low-density polyethylene supplies a flexible, chemically resistant closure material for everyday lab use, while the brown colouration helps limit light transmission compared with natural transparent or translucent caps. Supplied as a single piece from manufacturer lab-o-plastix, this brown LDPE screw cap is aimed at workflows involving light-sensitive media, analytical solutions and other UV-sensitive contents that benefit from a darkened polymer closure. It serves general laboratory storage, sample protection and bottle sealing where a GL 50 interface and brown LDPE construction are specified for light-sensitive applications.
This article is part of Screw caps & closures, in Stoppers, caps & closures.
Key features
- Pack size: 1 pc
- Product type: Screw cap
- Material: Low-density polyethylene (LDPE)
- Colour: Brown
- Thread: GL 50
- Light protection: Protection from UV rays
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Questions about Screw cap, LDPE, amber colour, GL 50
What is this article?
Screw cap, LDPE, amber colour, GL 50 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.