Word: inertly
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Dates: during 1970-1979
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...limestone-a rough gold-plated copper surface that has a special affinity for EGDN. As the molecules adhere to it, their concentration increases. The special surface is then heated to 176° to 194° F., causing it to release its cargo of molecules. Conveyed by an inert gas, argon, into a tube made of pure gold, the molecules are concentrated even further. Finally, the telltale vapors are swept into the chromatograph itself. Adjusted to respond only to their known flow-rate, the detector's built-in electronic signaling mechanism quickly touches off an alarm. The system...