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  1. /320545-20mm-GC-Grade-Soil-Septum-for-Headspace.JPG
    20 mm PTFE/Silicone Soil Sample Septa (100/pk) Item # 320545
    20 mm GC Grade Soil Septum for Headspace (100pk) Learn More
  2. /320401-20mm-Chlorobutyl-Septum.JPG
    20 mm Chlorobutyl Septum (100/pk) Item # 320401
    20 mm Butyl Septum (100pk) Learn More
  3. 20 mm Butyl Injection Stopper (100/pk)
    20 mm Butyl Injection Stopper (100/pk) Item # 320402
    20 mm Butyl Injection Stopper (100/pk) Learn More
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