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PTFE Coated Silicone GC Septa

SUPELCO/22731 - diam. 11 mm ( 7/16 in.), pkg of 100 ea

Product Type: Equipment/Book
Catalog Number PKG Qty. Price Quantity
45-22731 100 ea
 $232.00
1/EA		 Add To Favorites
diam. 11 mm ( 7/16 in.)
material off-white silicone body (123 mil thick)
  yellow PTFE face (2 mil thick)
packaging pkg of 100 ea
Application: Glass vials equipped with stir bars may be sealed with PTFE faced silicone septa for solvent drop microextraction analysis of water samples.
General description: PTFE-faced septa are designed for applications where greater inertness is required. The off-white silicone rubber body (123 mil thick) provides plenty of support for the yellow PTFE face (2 mil thick). After the PTFE is ruptured during injection, some bleeding may occur. Because this bleed increases as more of the rubber is exposed, we recommend using a needle guide to reduce the size of the punctured area. For use with 200 °C to 300 °C inlet temperatures.
General description: PTFE-fused septa are suitable to overcome the degradation due to prolonged high temperatures which occurs in silicone rubber septa. The degradation results in baseline drift and additional peaks. It is generally fixed with the PTFE face towards the column packing.
UNSPSC 41115718

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