Dissolved oxygen sensor
Fish require oxygen dissolved in water to survive. To monitor this, there are different types of dissolved oxygen (DO) sensors available commercially. Probably the best for CELSS use is the galvanic sensor, which uses silver or platinum as the cathode and lead, iron or zinc as the anode, and requires little power to run.Cole Parmer Instrument Company 1-800-323-4340
Corning 1-800-492-1110
Danfoss Analytical A/S 011-45-7488-2222
Extech Instruments Corporation 1-781-890-7440
Fisher Scientific 1-800-766-7000
Hach Company 1-800-227-4224
Hanna Instruments 1-877-694-2662
LaMotte Company 1-800-344-3100
Thermo Orion 1-800-225-1480
Oxyguard International A/S 011-45-4582-2094
Royce Instrument Corporation 1-800-347-3505
YSI Incorporated 1-800-897-4151
WTW Measurement Systems, Inc. 1-941-337-7112