Description
Septa silicone rubber/PTFE-coated are laminated sealing discs for autosampler vials and sample bottles, offered in packs of 200 pieces. Each septum combines a silicone rubber body with a PTFE coating, giving a resilient, resealable core and a chemically oriented contact face toward the sample. They are specified for vial and cap systems E159.1, E160.1 and C518.1 and are used under screw caps with hole to allow needle penetration while maintaining a sealed vial. Pack weight is 0,020 kg, suitable for regular laboratory stock. These dual-layer septa sit within the labware category for autosampler vials and sample vessels and are supplied from manufacturer ROTH SELECTION as part of a matching accessory set. The silicone/PTFE construction is a common choice where both mechanical elasticity and a PTFE sample-side surface are required in everyday analytical handling. Fitted correctly with the corresponding screw caps, the septa help standardise closure practice across sample series used in storage, transport and instrument work without changing the underlying vial format.
This article belongs on Vial caps & septa, in Vials, caps & septa.
Key features
- Pack size: 200 pc(s)
- Product type: Silicone rubber/PTFE-coated septa
- Material: Silicone rubber with PTFE coating
- Compatibility: E159.1, E160.1, C518.1
- Weight: 0,020 kg
- Application area: Autosampler vials and sample bottles
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Questions about Septa silicone rubber/PTFE-coated, f. E159.1, E160.1, C518.1, 200 unit(s)
What is this article?
Septa silicone rubber/PTFE-coated, f. E159.1, E160.1, C518.1, 200 unit(s) is the article on this page. Luminix Health distributes Carl Roth for laboratory use. It sits in Vial caps & septa, inside Vials, caps & septa, in Chromatography equipment.
A vial cap and a septum have to match the vial neck: crimp, screw or snap, and the diameter. The septum material, PTFE/silicone or rubber, decides chemical resistance and how many times a needle can pierce it. A septum that sheds into the solvent becomes ghost peaks.
An autosampler vial is the small closed bottle a chromatograph picks up. The neck is crimp, screw or snap, and the cap and the septum have to be that neck. The septum is the part the needle pierces. A soft septum reseals. A septum that is wrong for the solvent swells or sheds particles into the sample. Inserts reduce the volume when the sample is scarce. The separation they feed is described with IUPAC names and PubChem data.
Which category should I open next?
The category is Vials, caps & septa. The sub-category is Vial caps & septa. The catalogue is Chromatography equipment.
Shelves beside this one are Chromatography accessories, Autosampler vials, Crimpers & decappers and Vial inserts.
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.