Ultra Low Bleed Septa Products | Chromatography Direct
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Ultra Low Bleed Septa Products (ULB)


  • Do you experience coring and subsequent instrument blockages with Butyl rubber?
  • Do you have additional interfering peaks on repeat injections?
  • Do you have occurrences of needle breakage or damage with your current septa?
  • Do you have problems with variation in peak area on repeat injections?

Then try our new Ultra Low Bleed Silicone Products

  • Significantly reduced levels of Siloxanes present when compared to other commercially available products.
  • Anti-coring to prevent plugs of septa blocking instrument flowpath - ensuring minimal downtime.
  • A better seal and better resealing for repeat injections compared to Butyl rubber products.
  • Low extractables compared to Butyl rubber when performing repeat injections
Also available in 96-well mats

Butyl Rubber Septa

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Chromatography Direct Ultra Low Bleed Septa



CP-01-11-04ULB
11mm crimp cap with white silicone/ cream ptfe septa Ultra low bleed (ULB) (PK/1000)
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Part No. CP-01-11-04ULB
List Price 185.00
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CP-02-11-04ULB
11mm snap cap with white silicone/cream ptfe septa Ultra Low Bleed (ULB) (PK/1000)
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Part No. CP-02-11-04ULB
List Price 180.00
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CP-B-04-11-04ULB
Blue 9mm screw cap with white silicone/cream ptfe septa Ultra Low Bleed (ULB) (PK/1000)
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Part No. CP-B-04-11-04ULB
List Price 180.00
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CP-M-03-18-04ULB
18mm metal screw thread cap fitted with blue silicone/ptfe Ultra Low Bleed (ULB) Septa (PK/1000)
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Part No. CP-M-03-18-04ULB
List Price 515.00
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CP-M-03-18-04ULB-T
18mm metal screw thread cap fitted with blue silicone/white ptfe Ultra Low Bleed (ULB) Septa 0.050" thick (PK/1000)
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Part No. CP-M-03-18-04ULB-T
List Price 495.00
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MAT-96-R-ULB-01
96 Round Well Ultra Low Bleed (ULB) Silicone Mat Standard 7mm Plug (Mass Spec Approved) (PK/5)
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Part No. MAT-96-R-ULB-01
List Price 40.00
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MAT-96-R-ULB-01-S
96 Round Well Ultra Low Bleed (ULB) Silicone Mat Standard 7mm plug - Pre Slit (Mass Spec Approved) (PK/5)
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Part No. MAT-96-R-ULB-01-S
List Price 48.00
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MAT-96-R-ULB-02
96 Round Well Ultra Low Bleed (ULB) Silicone Mat with 8mm Plug (Mass Spec Approved) (PK/5)
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Part No. MAT-96-R-ULB-02
List Price 40.00
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MAT-96-R-ULB-02-S
96 Round well Ultra Low Bleed (ULB) Silicone Mat with 8mm Plug - Pre Slit (Mass Spec Approved) (PK/5)
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Part No. MAT-96-R-ULB-02-S
List Price 48.00
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MAT-96-S-ULB
96 Square Well Ultra Low Bleed (ULB) Silicone Mat (Mass Spec Approved) (PK/5)
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Part No. MAT-96-S-ULB
List Price 40.00
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MAT-96-S-ULB-S
96 Square Well Ultra Low Bleed (ULB) Silicone Mat - Pre Slit (Mass Spec Approved) (PK/5)
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Part No. MAT-96-S-ULB-S
List Price 48.00
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