Crimp Caps
Crimp Caps from Agilent Technologies
Agilent recommends using Certified crimp caps with PTFE/silicone septa to ensure seamless operation with your Agilent autosampler. Agilent Certified crimp caps are guaranteed to work with your instrument to reduce autosampler malfunctioning and contamination.
- Buy
- Features
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- Crimp caps provide additional security for food, forensics, and other applications for which you want to avoid sample tampering
- Crimp caps are recommended if you are working with volatile compounds
- Agilent septa are continually being improved to limit leaching, coring, sticking, push-through, hardness, and adsorption/absorption
- During manufacture, Agilent septa undergo thermal and chemical conditioning to reduce siloxane bleed, which can occur when the septa material is stressed during heating, solvent interaction, or piercing by the autosampler needle
- For highly sensitive samples, we recommend PTFE-lined (“sandwiched”) septa, because the PTFE layers act as a chemically resistant barrier
- Specifications
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Use the chart below to determine the right cap and septa combination, based on your application. Note: septa that are too thick can prevent the cap from fitting properly on the vial.
High Performance Septa Thin PTFE PTFE/Silicone* PTFE/Silicone/PTFE PTFE/Red Rubber Fluoroelastomer Butyl Temperature Range 40 - 300 °C** up to 260 °C -40 - 200 °C -40 - 200 °C -40 - 90 °C -40 - 260 °C -50 - 150 °C Use for multiple injections No No Yes Yes No No No Price Most expensive Very economical Economical Most expensive Very economical Economical Economical Resistance to coring Excellent None Excellent Excellent None None None Recommended for storage No No Yes Yes No No No Best for High temperature headspace applications Superior chemical inertness, short cycle times, and single injections Most common HPLC and GC analyses, not as resistant to coring as P/S/P Superior performance for ultra analysis, repeat injections, internal standards Chlorosilanes, more economical option for single injections Chlorinated solvents, higher temperatures Organic solvents, acetic acids; impermeable to gases *Agilent silicone is peroxide cured, making it more inertand less likely to interact with samples
**For up to 1 hour
- Literature
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Agilent Vials and Sample Containment Brochure
Contains details of Agilent's range of vials and closures
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An Agilent Septum is Not Just a Septum - White Paper
Technical overview on Agilent's septa
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