Description
PE caps for test tubes Ø 30 mm are polyethylene closure caps intended for laboratory test tubes with an outer diameter of 30 mm. Each cap measures 28 mm in diameter and is used to cover matching tubes during sample handling, short-term storage and everyday bench organisation. The caps are packed in units of 100 pieces, providing a practical supply for laboratories that regularly work with larger-diameter test tubes. Pack net weight is 0,134 kg and gross weight is 0,134 kg. These PE caps from manufacturer Witeg suit standard glass or plastic test tubes of the corresponding diameter and support consistent tube covering in research, analytical and educational settings. Polyethylene keeps the closures light and easy to fit or remove without tools. The 100-piece pack format helps maintain a ready stock of correctly sized caps for sample series and general laboratory use. Select these PE caps when a simple closure matched to 30 mm test tubes is required for routine laboratory practice.
This article is part of Screw caps & closures, in Stoppers, caps & closures.
Key features
- Pack size: 100 pc(s)
- Material: PE
- Cap diameter: 28 mm
- For test tubes: Ø 30 mm
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Questions about Caps PE for test tubes Ø30mm
What is this article?
Caps PE for test tubes Ø30mm is the article on this page. Luminix Health distributes Witeg 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.