Description
Screw caps made of polypropylene (PP) with an integrated PTFE/silicone septum provide a sealed closure option for compatible reaction vials used in molecular biology and related laboratory workflows. The combined PTFE/silicone septum supports needle access while helping maintain a secure seal during sample handling, storage and transport steps. These caps are specified for reaction vials AEK4.1ff, allowing laboratories to complete open PP vessels with a matching screw-thread lid. Supplied as 250 pc(s) per pack, they suit routine replenishment beside freestanding or screw-in reaction vials in microbiology, molecular biology and cell-culture settings. From manufacturer ROTH SELECTION, the PP screw caps with PTFE/silicone septum fit cryogenic-tube and screw-in vessel work where septum-based sampling is required. The lightweight pack (0,100 kg) is practical for bench stock and inventory control. Use them wherever a reliable PP screw closure with integrated septum is needed to finish reaction-vial setups without changing established vial formats.
This article is part of Screw caps & closures, in Stoppers, caps & closures.
Key features
- Pack size: 250 pc(s)
- Material: PP (polypropylene)
- Septum: Integrated PTFE/silicone
- Compatibility: Reaction vials AEK4.1ff
- Weight: 0,100 kg
- Product type: Screw caps
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Questions about screw caps, PP, with integrated PTFE/silicone septum, 250 unit(s)
What is this article?
screw caps, PP, with integrated PTFE/silicone septum, 250 unit(s) is the article on this page. Luminix Health distributes Carl Roth 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. Delivery across Europe, two to five days when in stock. 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.
