High-Temperature EI Filament
Accessory for Agilent 5972, 5973, 5975, or 5977 GC-MS. EI (electron ionization) filaments meet or exceed original manufacturer's performance. Every filament is subjected to QC tests, including heat, electrical current, and resistance. Samples from each filament manufacturing lot are installed in an MSD for in situ testing.

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Great product replacement.
Replacement part for GCMS source
Bought this Restek brand filament as a replacement for an OEM filament, and it works just as well at a better price! Have been using these filaments for a while and they last just as long with similar results as the OEM part. Received in a timely manner. No complaints here so far.
Review Date: 9 Dec 2019 | Restek Corp.
Perfectly satisfactory
analyse metabolites
Essential component, working OK. other purchases from Restek also satisfactory.
Review Date: 25 Jul 2018 | Restek Corp.
Accessory for Agilent 5972, 5973, 5975, or 5977 GC-MS.
- EI (electron ionization) filaments meet or exceed original manufacturer's performance.
- Every filament is subjected to QC tests, including heat, electrical current, and resistance.
- Samples from each filament manufacturing lot are installed in an MSD for in situ testing.