Analox O2EII Nitrox Analyser with LDC display and a BCD dome adaptor


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Analox O2EII Nitrox Analyser

The Analox O2EII Nitrox Analyser (officially called the O2Eii Pro Analyser) is the preferred choice of many professional divers and schools for accurate gas analysers to check your O2 mix before a dive. It's an essential piece of kit for any EANx diver who needs to know what mix they are breathing to adjust your decompression algorithms. Single Button Design hasn't changed from the previous model because of its efficiency. The same calibrating dial make operation as simple as the previous model.

To analyse the mix in a cylinder you need to open the valve slowly so a small flow of gas comes out and place the dome section over the valve to pass the gas over the oxygen sensor.

As a Nitrox diver, confidence in your mix is vital to an enjoyable, trouble-free dive. Most diving associations stipulate in their training that you should never dive with Nitrox without being absolutely sure what your mix is. Therefore, the use of a Nitrox Analyser (also known as an Oxygen Analyser) is essential to your safety. Inflator Adaptor Inlet has been added to the dome section that passes the gas to be analysed over the sensor. This means you can check your mix when assembled too.

Analox has worked in the diving industry for over 25 years and is specialists in designing analysers to help look after the air you breathe.


The O2EII Nitrox Analyser comes with a hose barb, as well as new packaging and a new colour theme. The addition of the hose barb now allows the unit to be used while checking air quality at the tank or while the user is connected to their first stage regulator (via their BCD's low-pressure inflator). The O2EII Nitrox Analyser is a highly accurate device and a must-have for any scuba diver. The unit comes with a 3-year graded sensor warranty and has an expected sensor life of 4 to 5 years in the air.


In order to plan for a safe dive, you need to know the concentration of oxygen within your dive gas mix. Monitoring the oxygen levels within your gas mix will determine your entire dive plan. It will allow you to plan the depth, time and decompression stages allowing for a carefree dive. The hose barb will save you time. Furthermore, you can even check your mix while your tank is connected to your first stage regulator (via your BCD's low-pressure inflator). Please note you will require a BCD low-pressure inflator flow restrictor. Check with your BCD manufacturer for the correct model.


The O2EII Pro is small, lightweight and rugged. You can use it to check the quality of your diving gas mix directly at the tank. Furthermore, this neat design allows you to analyse through your BCD adaptor while in your harness. The Analox Sensor Technology provides an oxygen compensation chart. This enables the unit to be used in all environments around the world. This enables you to adjust the unit based on temperature and humidity.

This isn't what you are looking for, check out the other products from Analox.

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