Septas
The role of septa for GC analysis is key with many chromatographic problems caused as a result of inappropriate septa material or inappropriate handling of the septa.
Desired septa attributes:
- Must reliably seal against the carrier gas pressure in the inlet.
- Must be capable of being pierced by the syringe needle without pieces of the septa being deposited in the GC inlet system, which would be catastrophic to the chromatography.
- Must be capable of being pierced and resealed time after time.
- Must not be allowed to be contaminated or bleed material into the chromatographic system.
EC Grade
GP Grade
HT Grade
MN Grade
Signet Septa EC Grade
Features and Benefits
Recommended Applications
High turnover applications.
Product Specifications
Sizes available (mm): 6, 7, 8, 9, 10, 11, 11.5, 12.5, 17, plug.
- Combines significantly longer injection life, low bleed and low injection port adhesion.
- Blister packed to prevent absorption from the environment.
Recommended Applications
High turnover applications.
Product Specifications
Sizes available (mm): 6, 7, 8, 9, 10, 11, 11.5, 12.5, 17, plug.
Signet Septa GP Grade
Features and Benefits
Recommended Applications
Low temperature.
Product Specifications
Sizes available (mm): 5, 6, 7, 8, 9, 9.5, 10, 11, 11.5, 12.5, 15.
- Combines significantly longer injection life, low bleed and low injection port adhesion.
- Blister packed to prevent absorption from the environment.
Recommended Applications
Low temperature.
Product Specifications
Sizes available (mm): 5, 6, 7, 8, 9, 9.5, 10, 11, 11.5, 12.5, 15.
Signet Septa HT Grade
Features and Benefits
Recommended Applications
Highest temperature applications.
Product Specifications
Sizes available (mm): 6, 9, 9.5, 11, 11.5, 12.5, 17, plug.
- Bleed and temperature optimized combined with outstanding mechanical properties for the highest temperature applications.
- Retains softness and pierceability at high temperatures, and low injection port adhesion.
- Blister packed to prevent absorption from the environment.
Recommended Applications
Highest temperature applications.
Product Specifications
Sizes available (mm): 6, 9, 9.5, 11, 11.5, 12.5, 17, plug.
Signet Septa MN Grade
Features and Benefits
Recommended Applications
Premium septa for autosamplers with up to 400 injections per septum.
Product Specifications
Sizes available (mm): 5, 9, 11, 11.5, 12.5, 17
- Premium septum for autosamplers with up to 400 injections per septum.
- Comes supplied in a blister pack which prevent absorption from the environment.
Recommended Applications
Premium septa for autosamplers with up to 400 injections per septum.
Product Specifications
Sizes available (mm): 5, 9, 11, 11.5, 12.5, 17