Methods and apparatus for the collection, transportation, and analysis of gas samples which may be required in various scientific, environmental, and natural resource contexts is provided. An isolating container for removing a component from a fluid sample includes a body defining a sampling chamber having a first end and a second end; a first valve assembly coupled to the first end; a reactant material positioned within the sampling chamber for reacting with the component; and a second valve assembly coupled to the second end, wherein the fluid sample enters the sampling chamber through the first valve assembly and exits through the second valve assembly.