I have been using Cali-5 Bond bags for soil gas sample for helium and hydrocarbon exploration for about 15 years. I like the replaceable septum on the 500 ml bags that prevent leakage of helium and hydrocarbons from the bags over considerable time. In June, I will collect soil gas samples in 500 ml Cali bags over a helium prospect in Arizona. The samples will be analyzed in the field using a portable quadrupole mass spectrometer for hydrocarbons and fixed gases including helium. The nice thing about Cali-5 bags is they won’t leak and you can take samples at atmospheric pressure, which is necessary for introducing the sample to the mass spec.
Dr. David M Seneshen
President – Geochemical Insight