Description
Membrane-screw caps in polypropylene (PP) with thread GL 45 provide screw closures for laboratory bottles that use the GL 45 neck standard. The membrane design is intended for bottle systems where a membrane-equipped cap is specified, supporting typical laboratory sealing and handling steps around sample or reagent containers. Each pack comprises 5 pc(s) and weighs 0,080 kg, offering a compact unit size for bench drawers and store rooms. These membrane-screw caps are associated with manufacturer DWK Life Sciences and sit within laboratory glass, vessels and consumables ranges focused on containers, bottles and related seals. PP construction gives a clear polymer designation for laboratories that match cap materials to their bottle fleets and process requirements. Thread GL 45 geometry enables pairing with corresponding GL 45 laboratory bottles used in chemistry, life-science and quality-control workflows. The five-piece pack supports routine replacement of worn or missing caps without large inventory commitments. Staff selecting closures for GL 45 bottles can rely on the stated material and thread data to confirm compatibility before ordering. Overall, the caps serve as practical membrane screw closures for everyday bottle sealing tasks in organised laboratory environments.
This article is part of Screw caps & closures, in Stoppers, caps & closures.
Key features
- Pack size: 5 pc(s)
- Material: PP
- Thread: GL 45
- Product type: Membrane-screw caps
- Weight: 0,080 kg
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Questions about Membrane-screw caps, PP, thread GL 45, 5 unit(s)
What is this article?
Membrane-screw caps, PP, thread GL 45, 5 unit(s) is the article on this page. Luminix Health distributes DWK Life Sciences 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?
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.