Carbon monoxide - the problem:

A small concentration of CO can affect the body, and symptoms can include headache, fatigue, confusion and dizziness.  Prolonged exposure could lead to unconsciousness, brain damage or even death.

A number of incidents of CO poisoning in sport divers have been reported around the world.  In August 2010, an Australian diver was reported to have suffered CO poisoning.  He was flown by rescue helicopter from a dive in North Queensland, with symptoms including memory problems and a severe headache.

The new EII CO is similar in design to the O2 EII, but coloured red.  Analox Sensor Technology recommends that divers are equipped with both the EII CO carbon monoxide analyser, and the O2 EII oxygen analyser.

We recommend that with every EII CO, a bump test gas kit is also purchased.