Thermo Scientific™ 8 mm 自动进样瓶隔垫
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PTFE Disk septa are chemically inertPFTE red rubber septa are economical for many GC applicationsPTFE/silicone septa are
PTFE Disk septa are chemically inertPFTE red rubber septa are economical for many GC applicationsPTFE/silicone septa are