17 mm PTFE/Silicone Assembled Cap and
Perkin Elmer 18 mm PTFE/Silicone Assembled Cap and; 18 mm PTFE/Silicone Assembled Cap and Septa; each package contains 100 - PE
Perkin Elmer 18 mm PTFE/Silicone Assembled Cap and; 18 mm PTFE/Silicone Assembled Cap and Septa; each package contains 100 - PE