Description
PE caps for test tubes Ø 35 mm are polyethylene closure caps designed to fit laboratory test tubes with an outer diameter of 35 mm. Each cap has a diameter of 33 mm, providing a practical push-on fit that helps protect samples from dust, evaporation and casual contamination during routine handling, storage and transport. Supplied in packs of 100 pieces, these caps support high-throughput workflows in analytical, clinical and research laboratories where consistent tube sealing is required without complex threading. Manufactured from PE, the caps offer a lightweight, chemically resistant polymer surface suited to aqueous media and many common laboratory reagents. They integrate easily with standard glass or plastic test-tube formats of the matching diameter and are a straightforward consumable for sample preparation benches, teaching labs and quality-control stations. The product comes from manufacturer Witeg and is intended as a reliable everyday accessory for organising and securing open tubes. With a net weight of 0,183 kg per pack, the set is convenient to stock and dispense. These PE caps help maintain sample integrity between processing steps while remaining simple to apply and remove by hand.
This article is part of Screw caps & closures, in Stoppers, caps & closures.
Key features
- Pack size: 100 pc(s)
- Material: PE (polyethylene)
- Cap diameter: 33 mm
- Fits test tubes: Ø 35 mm
- Country of origin: Italy
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Questions about Caps PE for test tubes Ø35mm
What is this article?
Caps PE for test tubes Ø35mm 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.