Description
Closure caps for test tubes in polypropylene (PP), blue, with a diameter of Ø20 mm, are designed to close matching glass test tubes securely in everyday laboratory practice. They fit glass test tubes with article numbers TU02, TU04 and TU05, helping keep samples protected during handling, short-term storage and transfer between workstations. Made from polypropylene, the caps combine a practical fit with robust everyday durability for chemistry, life-science and clinical sample routines. Available in a bag of 250 pieces from manufacturer Labbox, the pack size suits laboratories that prefer manageable stock units while still covering regular consumption. The blue finish supports quick visual identification and colour-based organisation of tube series on the bench or in racks. Net weight is 0,760 kg per pack, making inventory and shelf planning straightforward. These Ø20 mm PP closure caps complement standard glass test-tube workflows for sample preparation, intermediate holding and general laboratory organisation, offering a simple, consistent sealing option without altering established procedures.
This article is part of Screw caps & closures, in Stoppers, caps & closures.
Key features
- Pack size: 250 pcs/bag
- Material: Polypropylene (PP)
- Diameter: Ø20 mm
- Colour: Blue
- Compatibility: Glass test tubes TU02, TU04, TU05
- EAN: 8434868037632
- GTIN: 08434868037632
- Technical Information Sheet:
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Questions about Test tube stopper, PP, Ø20 mm, blue color, 250 pcs
What is this article?
Test tube stopper, PP, Ø20 mm, blue color, 250 pcs is the article on this page. Luminix Health distributes Labbox 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.