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Russell Dissolved Oxygen Probe

  Russell Dissolved Oxygen Probe



Thermo Scientific dissolved oxygen electrodes are Clark type polargraphic electrodes.  A semi-permeable membrane allows oxygen to diffuse into the electrode. 


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Inside there are two noble metal electrodes separated by electrolyte.  A carefully fixed voltage allows only oxygen to be reduced.  The greater the oxygen partial pressure in the sample, the more oxygen diffuses.  Current is proportional to oxygen in the sample.  Several factors affect dissolved oxygen measurement.  Temperature, salinity and barometric pressure all need to be considered.  Thermo Scientific meters automate these procedures.  Gentle stirring is recommended to prevent oxygen depletion at the membrane interface. 

 Russell Dissolved Oxygen Probe
 Product# Price  Description  
       
 PDOC/081010MD      -    Waterproof, polargraphic dissolved oyxgen electrode with integral temperature compensation  Select 
 PDOC/MAINT/2      -    Maintenance kit for standard dissolved oxygen electrode  Select 
 PDOC/GEL      -    50 ml gel solution for dissolved oxygen electrode  Select 
 PDOC/MEMB/03/X5      -    5 replacement membranes for standard oxygen electrode  Select 
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Specifications:
Cathode :Gold
Anode :Silver
Temperature range (ºC) :0-45
Temperature sensor :NTC Thermistor 30K
Polarising time :20 mins maximum
Dimensions (l x dia) :105 x 12mm