Septa for Agilent Instruments
Septa for Agilent Instruments
Septa are available for a variety of different applications and have different upper temperature limits. Lower temperature septa are usually softer, seal better, and can withstand more punctures (injections) than their high-temperature counterparts. If septa are used above their recommended temperatures, they can leak or decompose, causing sample loss, lower column flow, decreased column life, and ghosting.
Agilent premium non-stick inlet septa are designed and manufactured to provide a reliable non contaminating seal. The tri-fold blister pack ensures that each septum remains clean and ready to use.
- Proprietary plasma treatment prevents sticking and unnecessary inlet cleaning
- Innovative blister packaging keeps each septum clean and ready for use
- Center point guides the needle for easy penetration, less coring and longer life
- Precision molding assures accurate fit in the inlet
- Each batch is tested for bleed on Agilent 7890 GC-FID
- Premium formulations selected for sealing and chromatographic cleanliness
- No need to bake septa before using
There are three types of Agilent premium septa from which to choose to suit all GC application types:
- Bleed and Temperature Optimized (BTO) - Suitable up to 400°C and recommended for trace analysis
- Advanced Green - Recommended up to 350°C and good general purpose septum
- Long Life - Recommended for use with injection port temperatures below 350°C
Agilent's general purpose septa are made from an enhanced injection-molded silicone rubber. The septa material, gray in color, is specified to withstand over 200 automatic injections at an injection port temperature of 350 °C.
Non-Stick Bleed and Temperature optimized (BTO) Septa
- Extended temperature range, lowest bleed
- Maximum injection port temperature 400°C
- Plasma treatment eliminates sticking in the injection port
- Pre-conditioned; ready to use
- Blister packaging for cleanliness and convenience
- Ideal for use with low-bleed, "Mass Spec" capillary columns
Non-Stick Advanced Green Septa
- True long-life, high temperature green septa
- More injections per septum
- Plasma treatment eliminates sticking in the injection port
- Maximum injection port temperature 350°C
- High-performance alternative to competitors' "green" septa
- Blister packaging for cleanliness and convenience
Non-Stick Long-Life Septa
- The preferred septa for autosamplers
- Pre-pierced for extended life and reduced coring
- Ideal for overnight runs
- Up to 400 injections per septum
- Plasma treatment eliminates sticking
- Maximum injection port temperature 350°C
- Soft, 45 durometer, easy on autosampler needles
- Blister packaging for cleanliness and convenience
General Purpose Septa
- Low bleed for reduced and increased productivity
- Ability to withstand more than 200 injections at elevated injection port temperatures
- Easy penetration yet resistant to coring and leaking from multiple injections
- Blister packaging for cleanliness and convenience
Summary of Premium Inlet Septum Characteristics
| Septum Type | Bleed | Lifetime | Temperature Limits |
| Non-Stick BTO (Bleed and Temperature Optimized) | ✔✔✔ | ✔ | to 400°C injection port temp |
| Non-Stick Advanced Green | ✔✔ | ✔✔ | to 350°C |
| Non-Stick Long-Life | ✔ | ✔✔✔ | to 350°C |
✔✔✔ = Best
✔✔ = Very good
✔ = good
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Agilent Premium Septa for ContaminantFree Inlet and Reduced Bleed