National Scientific 13mm Septa For Screw Thread Vials

For 4mL screw thread vials
Grouped product items
Product Name Part # Price Qty Image
13mm Septum, Virgin PTFE, 10mil, 1000/case NS-C401510
13mm Septum, Red PTFE/White Silicone/Red PTFE, 100/pack NS-C401540
13mm Septum, Blue PTFE/White Silicone, Pre-slit, 100/pack NS-C401555
13mm Septum, Red PTFE/White Silicone, Soft Durometer, Thin septum, 100/pack NS-C401545
13mm Septum, Ivory PTFE/White Silicone, 1000/case NS-C401561
13mm Septum, Red PTFE/White Silicone, 100/pack NS-C401560

* 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