I just found one on here.
http://www.forestry-suppliers.com
this is what it is; Extech ExStik® II Dissolved Oxygen Meter.
It is $300 I dont know how well it works anyone know?

Just Found a YSI DO 200 model for 245 same sight but the cable and probe are seperate from the meter.

Last edited by fishwrangler; 12/07/09 04:48 PM.
take a kid fishing the first catch creates a life long fisherman. (my dad)