Sample Containers For N2 / Ar and 4He
Septum bottles (150 mL) with a rubber type stopper are used. This same bottle type is used for N2, Ar, CH4, O2, CO2, and 4He. The bottles with their stoppers are preweighed and sent to the sample collector by the USGS lab. Pictures below.
N2 / Ar / 4He bottle sets
N2 / Ar / 4He bottle and stopper with needle inserted ready for sample collection