Palm O2
An excellent, easy to use oxygen analyzer for divers using oxygen/nitrogen mixes. This unit will not test for helium and other gases. The Oxygen sensor and battery are user replaceable.
All Trimix 4001
A great option for testing gases that contain oxygen, nitrogen and helium. It packs up in a small case and is easy to travel with as well. The Oxygen and helium sensors and battery are user replaceable.
Palm CO
An easy to use hand held analyzer for testing Carbon Monoxide in your gas. This is an excellent choice to use when both local and traveling. The carbon monoxide sensor and battery are user replaceable.
Jade Scuba Adventures 