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Septa for Gas Chromatography

By Specialty Silicones

Krackeler Scientific offers a line of GC septa with high heat stability, low bleed, and long injection life at reasonable prices. Each lot is quality control tested to maintain consistently high standards. Choose from these special-purpose septa, available in standard sizes:

  • High Temperature blue septa
  • High Temperature green septa
  • PTFE-faced blue septa
  • Lowest bleed brick red septa

Select the septa with the combination of characteristics to fit your needs. The harder, high temperature septa do not have the long injection life of softer septa. Therefore, keep your syringe needles sharp to prolong the useful life of high temperature septa.

Most septa are also available in bulk packaging for greater savings.

Septa Size Guide

The 9.5mm (3/8") septa fit these instruments:

  • Varian all models except capillary injector
  • Hewlett-Packard 5700, 5800, 5900 series
  • Tracor models 550, 560
  • Packard models 427 through 433

The 11.0mm (7/16") septa fit these instruments:

  • Perkin Elmer Sigma, models 900, 990, 3920

The 12.5mm (1/2") septa fit these instruments:

  • Hewlett-Packard models prior to 5700 series
  • Tracor models 220, 222
  • Packard models 409 through 421

Krackelerbrand High Temperature Green Septa

Use these silicone rubber septa when you want high temperature green for GC applications which require low bleed and long injection life. These septa show the same performance characteristics as the high temperature blue septa--low bleed, heat stable to 300°C for extended periods, and long injection life.

         
Cat.No. Diam PK    
75-3212 9.5 (3/8) $54.99
100/PK
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75-3212B 9.5 (3/8) $549.00
1000/PK
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75-3214 9.5 (3/8) $82.50
250/PK
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75-3218 11.0 (7/16) $64.49
100/PK
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75-3218B 11.0 (7/16) $510.00
1000/PK
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Krackelerbrand High Temperature Blue Septa

Use high temperature blue septa when you need low septum bleed at injection port temperatures of 300°C for extended periods of time. Long injection life (50 injections with a 26 gauge needle). These silicone rubber septa are batch tested for low bleed characteristics. Choose from package sizes of 100, 250 and 1000.

         
Cat.No. Diam PK    
75-3612 9.5 (3/8) $68.84
100/PK
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75-3612B 9.5 (3/8) $472.41
1000/PK
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75-3614 9.5 (3/8) $162.82
250/PK
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75-3616 11.0 (7/16) $68.56
100/PK
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75-3616B 11.0 (7.16) $483.65
1000/PK
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Krackelerbrand Brick Red Septa

These brick red septa have high temperature stability, very low bleed and long injection life. They are ideal for GC mass spectrometry, temperature programming and capillary column trace work where minimal or no bleed is necessary. Septa are preconditioned for maximum performance.

         
Cat.No. Diam PK    
75-4910 6mm (1/4") $0.00
100/PK
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75-4912 9.5 (3/8) $110.33
100/PK
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75-4914 11 (7/16) $111.83
100/PK
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75-4916 12.5 (1/2) $113.12
100/PK
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Krackelerbrand PTFE Faced Blue Septa

A thin PTFE coating bonded to silicone rubber ensures septa with low bleed characteristics and long injection life when used at injection port temperatures of 250 to 300°C. Easier sample injection.

         
Cat.No. Diam PK    
75-5012 9.5mm (3/8") $109.14
100/PK
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75-5012B 9.5 (3/8) $818.50
1000/PK
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75-5014 11.0 (7/16) $117.83
100/PK
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New Year Price Updates

We are currently working diligently to update our website pricing information for the New Year. If you place an order, you will be acknowledged with any corrected pricing. If you'd like the most current information sooner, please don't hesitate to drop us an email or give us a call and we'd be happy to assist. Thank you for your patience while we are updating.

800-334-7725
office@krackeler.com


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