Description
Screw-on lids in white polypropylene with silicone sealing are intended for secure closure of matching screw cap tubes used in molecular biology and related laboratory work. Each lid combines a PP body with an integrated silicone seal to support a tight fit when screwed onto compatible vessels, helping retain samples during handling, storage or transport. The lids are supplied white and attached, ready for use with screw-in tube systems common in microbiology, cell-culture and cryogenic-style workflows. Offered as a pack of 1000 pc(s) from manufacturer ROTH SELECTION, the bulk format matches high-consumption laboratory environments. Polypropylene construction aligns with standard PP tube materials, while the silicone sealing element provides the compliant interface needed for reliable closure. White colouring keeps markings and labels easy to read on the cap surface. The complete pack weighs 0,420 kg, making it straightforward to stock beside corresponding brown or clear screw cap tubes. These screw-on lids complete tube assemblies used for aliquoting, short-term holding and routine sample logistics without specialised tools.
This article is part of Molecular biology reagents (other), in Molecular biology.
Key features
- Pack size: 1000 pc(s)
- Material: PP
- Colour: white
- Sealing: silicone
- Configuration: attached
- Weight: 0,420 kg
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Questions about Screw-on lids, PP, with silicone sealing, white, attached, 1000 unit(s)
What is this article?
Screw-on lids, PP, with silicone sealing, white, attached, 1000 unit(s) is the article on this page. Luminix Health distributes Carl Roth for laboratory use. It sits in Molecular biology reagents (other), inside Molecular biology, in Microbiology lab supplies.
These are the molecular-biology reagents that are not an extraction kit and not a PCR master mix: buffers, dyes, ladders' companions, modifying enzymes. Nuclease-free is a claimed property and the reason the bottle costs what it does. A laboratory-grade chemical of the same formula is not a substitute.
Molecular biology here is the handling of DNA and RNA. Extraction kits break the cell and then separate the nucleic acid from protein and from the other nucleic acid. PCR and qPCR reagents copy a chosen sequence so it can be seen. The enzymes and the nucleotides are what the copy depends on. Nuclease contamination destroys the sample before the kit can save it. Sequences are on NCBI Nucleotide. Papers are on PubMed.
Which category should I open next?
The category is Molecular biology. The sub-category is Molecular biology reagents (other). The catalogue is Microbiology lab supplies.
Shelves beside this one are DNA & RNA extraction kits and PCR, qPCR & nucleic acid analysis reagents.
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.

