Gas syringe Magnum, 20 mL RN, .035 inch x .023 inch x 2 inch, bevel open end, Luer

Specially formed seals permit leak-tight operation to 30 psi.
Built-in twist-lock valve and positive rear plunger stop
The detection of low levels of various environmental contaminants can require extraordinarily large samples. Magnum syringes facilitate the trapping of such samples in remote locations. A built-in valve allows the sample to be sealed within the syringe, maintaining sample integrity during transportation to the analysis site.
Up to 500 ml capacity
Magnums have been successfully used to sample atmospheric contaminants such as sulfur dioxide and oxides of nitrogen at distant points of the earth. The positive displacement capability of the durable PTFE plunger seal permits use in a variety of subsequent procedures involving extraction or concentration of trace components. (With a cryogenic enrichment apparatus, for example).