item 2 Azzota® Filter Vials, PTFE, Hydrophilic,PoreSize: 0.45um, 100/pk (Caps included) Azzota® Filter Vials, PTFE, Hydrophilic,PoreSize: 0.45um, 100/pk (Caps included) $126.49 item 3 VWR 25mm syringe filter with 0.45um PTFE membrane, 100/pk, PN 28145-497 VWR 25mm syringe filter with 0.45um PTFE membrane, 100/pk, PN 28145-497