Crimp closure, N 20, alu. blue/tin, center hole,Sil. white/Polyimide orange, 3mm
*taxes and shipping not included
Delivery time approx. 5 working days
Quantity | Price/unit |
---|---|
To 9 | $210.60 |
From 10 | $179.40 |
From 50 | $162.50 |
Bi-metal crimp closures support transportation of the vial via magnet, as for e.g. in the CTC Combi PAL, the Shimadzu AOC 5000/6000 or the Gerstel autosampler. The septum of this closure is laminated with Polyimide (fluorine-free) instead of PTFE; thus suitable for analysis of fluorinated organic compounds (e.g. PFAS analysis). Septa are assembled, caps are ready-to-use. Septa are shown for illustration purposes only, images upside down.
Closure type | Crimp closure |
Nominal diameter | N 20 |
Assembling process | Assembled |
Cap material | Aluminum/tin |
Cap color | Blue/silver |
Cap hole | Yes |
Closure magnetic | Yes |
Septa material | Silicone/Polyimide |
Colors of septa material | White/orange |
Septa thickness | 3.0 mm / 118,1 mil |
Septa hardness | 45° shore A |
Additional closure features | Fluorine-free |
Recommended application(s) | Headspace |
Autosampler compatibility | CTC Combi PAL (Agilent/PerkinElmer/Varian/Thermo Scientific) |
Storage temperature | 15–25 °C / 59–77 °F |
Scope of delivery | 100x N 20 ready assembled crimp closures |
Gross weight (incl. packaging) | 498 g / 1.1 lbs |
Packaging dimensions | 160 x 160 x 40 mm / 6.30 x 6.30 x 1.57 Inch |
Hazardous material | No |
PTFE (polytetrafluoroethylene) covers most elastomeric liners in chromatography closures. It is the chemically resistant barrier that on one hand protects the elastomer layer (like silicone or rubber) from being destructed by aggressive solvents/samples and on the other hand the samples from any contaminants possibly emerging out of the carrier material. While it is generally recommendable to have such a chemically resistant barrier between sample and carrier material, the PTFE lamination may become a problem in the analysis of fluorinated compounds, as in e.g. PFAS analysis, as there is the risk that fluorine from the PTFE may migrate into the sample.
A fluorine-free septum, i.e. a septum with a Polyimide instead of a PTFE lamination as the chemically resistant barrier, is therefore recommendable to ensure reliable analysis results.