1. PTFE/silicone septa pre-lit (or slit): for HPLC used purpose, with pre-cut singe or double line on septa
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2. PTFE/silicone septa (un slit): without pre-slit for GC used purpose:
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1. PTFE/silicone septa pre-lit (or slit): for HPLC used purpose, with pre-cut singe or double line on septa
----
2. PTFE/silicone septa (un slit): without pre-slit for GC used purpose:
https://chratec.com/brand/P4819-02793
ChraSep, Cap and Septa for 2ml Sample Vial, Red PTFE/white silicone septa and Blue screw cap with hole, for 2ml 9-425 screw top Vial, 100pcs, pcs was un-slit
https://chratec.com/brand/P4819-02801
ChraSep, Blue PTFE/white silicone septa, Pre-slit and Blue screw cap with hole, 2ml 9-425 screw top Vial, 100pcs, pcs