National Scientific 13mm Septa For Screw Thread Vials
For 4mL screw thread vials
$40.00
* PTFE Disk septa are inert chemically inert
* PFTE Red Rubber septa are economical for many GC applications
* PTFE/Silicone septa are most popular for HPLC and IC applications
* Pre-slit septa are easier to pierce with thin gauge needles
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