Inlet Septa

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Injection Port Septum

Even when a low bleed septum is used, bleeding is not totally eliminated. The type of bleeding differs according to the septum type and bleeding appears as different peaks on a chromatogram. In high-sensitivity analysis, you need to select and use a septum that does not cause bleeding at a position where interference occurs with the target compound.

When using an autosampler, it is recommended to exchange the septum after about 100 injections. If the injection is done manually or the outer diameter of the needle is thick, the septa should be replaced more often.

Recommended Septum

  P/N Color Description
227-35004-01
 227-35004-01 Green Premium Green Septa
  • Low-bleed septum, combines significantly longer injection life, low bleed and low injection port adhesion.
  • Maximum temperature (INJ setting temperature): 350°C
  • 50 pcs.
227-35511-01
 227-35511-01 Red Xtra Life Septum
  • Extra long-life septum, lasts up to 10x longer than a standard septum.
  • Maximum temperature (INJ setting temperature): 400°C
  • 25 pcs.

Additional Options

  P/N Color Description
201-35584
 201-35584 White Standard Type, General-purpose septum
  • Only suibtable for low temperature applications.
  • Maximum temperature (INJ setting temperature): 350°C
  • 20 pcs.
221-48972-91
 221-48972-91 Blue LL Septum - Long Life Type 
  • Provides significant durability improvements compared to a conventional low-bleed septum, offering both low bleed and long life.
  • The problem of sticking to the vaporizing chamber during continuous use at high temperatures experienced with a conventional septum has also been eliminated
  • Suitable for high-sensitivity analysis
  • Maximum temperature (INJ setting temperature): 450°C
  • 20 pcs.
221-48398-91
 221-48398-91 Brown HT Septum - High Temperature Type
  • Using this septum alleviates the problem of reduced durability when the vaporizing chamber is used continuously at 450°C.
  • Compared to the LL septum, the increase in bleed when used at high temperatures is kept at a lower level
  • The problem of sticking to the vaporizing chamber during continuous use at high temperatures experienced with a conventional septum has also been eliminated
  • Suitable for high-sensitivity analysis at high temperatures
  • Maximum temperature (INJ setting temperature): 450°C 
  • 20 pcs.
221-76650-01
 221-76650-01 Green HT Septum - High Temperature Type
  • This septum is least influenced by a plasticizer. Better prevents septum coring
  • Low-bleed, suitable for high-sensitivity analysis
  • Maximum temperature (INJ setting temperature): 350°C
  • 25 pcs.
221-75180
 221-75180 Light blue Enduro Blue Septum
  • Low-bleed, suitable for high-sensitivity analysis at high temperatures
  • Maximum temperature (INJ setting temperature): 350°C
  • 50 pcs.
980-13409
 980-13409 Red Pyrolysis Septum
  • Surface treated septum for analysis with the Pyrolysis-GCMS.
  • Maximum temperature (INJ setting temperature): 400°C
  • 5 pcs.
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