On the nose warnings
BOC Scientific has available a package called AirSurance. The product range includes Detectagas and Stench Gas mixtures which together monitor and alert workers to unsafe gas levels.
Detectagas is used to verify the accuracy of gas detection monitors before employees or contractors enter confined work spaces.
Stench Gas is used in ventilation systems as an alert gas for emergency evacuation. It sends a clear and definitive message for immediate evacuation from a confined space. It is suitable for noisy situations where electronic alarms cannot be heard. With a distinguishing odour, Stench Gas can be quickly dispersed through a site's air flow, such as into underground mines or other confined spaces, to alert workers of impending danger.
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