environmental volatile organic analysis vials PTFE silicone septa with cap Pre-Cleaned/Environmental Sampling Vials | SECO Vial, 40 ml, 28 OD x 95 mm H, Amber, Borosilicate Glass, 24-414 mm Closure, Natural Silicone/PTFE Septa, Clean Snap Cap, Processed Level, 44 ml Brim Volume, 0.125" Bonded Septum, For Volatile Organic Analysis, Fully Assembled Vial, 40 ml, 28 OD x 95 mm H, Amber, Borosilicate Glass, 24-414 m More