Gas tool for stowaway!
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• Environmental Instruments of Leamington Spa has developed a hand-held carbon-dioxide analyser which can be used to detect stowaways in trucks, trailers and containers. The Anagas CD 98 is already being used by police forces and immigration authorities at border crossings in Austria, Hungary and Greece.
The unit weighs 230g and costs £499; it works by detecting higher-than-usual concentrations of CO2 in confined spaces. Air is drawn in through
a nozzle using a built-in pin 2m-long sample tube hell reach out-of-the-way a The background level of C air is typically 420pPm (I per million), but this increase to as much 5,000ppm in the presem human beings.
The analyser gives a a uous digital display of CO. els, and the user can si alarm for a specified level unit can also store up ti readings, each with a dat( time stamp.