Gas Sampling Tubes with PTFE Valves
Designed for the collection and storage of environmental samples. High vacuum valves are provided for evacuation and filling. Open top cap with a PTFE/silicone septum allows analytical samples to be withdrawn. Both ends are ground to accept 3/8" ferrules and hand compressible fittings for a gas-tight seal. Each size has a marking area for easy identification. Valve plug is 186-826601-0004.