Sampling Products > Other > Dissolved Gas Containers

Iso-Jars | Cylinders | Gas Bags

Two containers are available for collection of dissolved gas samples. The type you choose is a matter of personal preference and the type of data needed. Both generally provide sufficient sample for chemical and isotopic analysis of the dissolved gas for identifying the source of the gas. But if the amount of gas in the water is to be quantified (ppm or cc/L), the type of container needed may depend on the amount of gas present.

The Dissolved Gas Bottles can be used to quantify the amount of gas in the water if the gas content is below saturation at atmospheric pressure (i.e., does not form bubbles). IsoBags ™ are preferable when the amount of gas in the water is above the saturation limit, since both the dissolved gas and the free gas are quantitatively collected.

IsoBags™
Using sampling techniques established by Isotech for determining the dissolved methane content of groundwater samples, the IsoBag is more durable and better suited to this purpose than other sampling containers. Each IsoBag comes with a bactericide capsule inside to prevent degradation of the sample.

Although developed for dissolved methane analysis, IsoBags may be used for some other gas sampling needs. Contact Isotech for recommendations.
Dissolved Gas Samples in IsoBags (PDF)

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Dissolved Gas Bottles
Designed for collection of samples from domestic water wells, these 1-liter bottles are large enough for compositional and isotopic analysis of the dissolved gas. With the cap-mounted septum, it is not necessary to open the bottle during analysis, reducing the potential for contamination of the sample. Each bottle also contains a bactericide capsule to prevent degradation of the gas.
Dissolved Gas Samples in gas bottles (PDF)

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