Looking for O2 sensor

[Arduous]

There used to be a business in Massachusetts, that sold replacement oxygen sensors for the Oxycheq Expedition analyzers. (As well as others). I can’t remember the name of the company, but they had an on-line store, and their prices were very reasonable. If they no longer exist, does anyone know where the best prices for replacement sensors, can be found ?

 

[texdiveguy]

http://www.aii1.com/Rep_O2_sensors.htm

 

[yak]

http://tdl.divebiz.net/index.php?main_page=index&cPath=10_93