How should the SF5CF3 and CFC-13 samples be stored after collection?
The dissolved gases present in the ground water are sampled. The gas samples and some of the ground water are collected in bottles. The bottles are stored UPSIDE DOWN with the ground water in contact with the aluminum foil of the cap. The cap MUST be taped with electrical tape to prevent contamination of the extracted gas with air. They should be stored at room temperature. Avoid leaving samples in the sun or hot enclosed spaces (like field vehicles). Storage on ice is not recommended.
