Sale! Select options NITROX ANALYSER – O2EII PRO ฿ 8,840 – ฿ 21,440 RRP ฿ 8,398 - ฿ 20,368 RRP The O2EII Pro scuba Nitrox analyser is small, lightweight and rugged. It can be used to check the quality of your scuba diving gas mix directly at the tank or through your BCD adaptor while in your harness. With the unit, Analox Sensor Technology provides an oxygen compensation chart, which enables the unit to be used in all environments around the globe. This allows you to correct the unit based on temperature and humidity.