YSI 6450AF Anti-Fouling Dissolved Oxygen Sensor

YSI 6450AF Anti-Fouling Dissolved Oxygen Sensor


Copper-based parts on the YSI 6450AF ROX Dissolved Oxygen Sensor repel aquatic growth on sensors, extending deployment periods.


  • Utilizes luminescence lifetime detection of oxygen to provide the most stable measurements possible
  • Microprocessor-controlled measurement system reduces drift and improves accuracy
  • Easy to replace, durable membrane with a usable life of one year
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Why Buy From Fondriest?


The next generation YSI ROX is a luminescent-based dissolved oxygen sensor that offers YSI customers the most powerful tool for making long-term oxygen measurements in severe fouling and low oxygen environments. Its rugged design and large measurement range make it ideal for sampling, flow cell, and groundwater measurements.

The YSI 6450AF ROX optical sensor uses an integrated wiping system to provide anti-fouling in the most hostile environments. Durable mechanical features include a non-corroding titanium wiper shaft, replaceable wiper shaft seal, and a new switch controlled wiper parking system to prevent mis-parking.

The ROX sensing system is based on the luminescence lifetime method. This method was chosen because it offers the most stable, repeatable and sensitive method for oxygen detection, thus reducing sensor drift and prolonging deployment times.

YSI's optical DO membrane differs from the traditional electrochemical sensor membrane, requiring fewer steps for installation and less maintenance. ROX membranes will last for one year and are made of a durable material that is unlikely to be damaged in the field. The ROX sensor eliminates stirring dependency that was required of most traditional polarographic sensors.

Notable Specifications:
  • Range: 0 to 500%; 0 to 50 mg/L
  • Resolution: 0.1%; 0.01 mg/L
  • Accuracy (0 to 200%): +/-1% of reading or 1% air saturation, whichever is greater
  • Accuracy (200 to 500%): +/-15% of reading
  • Accuracy (0 to 20 mg/L): +/-0.1 mg/L or 1% of reading, whichever is greater
  • Accuracy (20 to 50 mg/L): +/-15% of reading
  • Warranty: 2 years
Image Part # Product Description Price Stock Order
YSI 6450AF Anti-Fouling Dissolved Oxygen Sensor 616450 6450AF anti-fouling ROX optical dissolved oxygen sensor with self-cleaning wiper Usually ships in 3-5 days
Image Part # Product Description Price Stock Order
YSI 6144 Optical Wiper Pad Kit 606144 6144 optical probe wiper pad kit, 20 pack of wiper pad strips
In Stock
YSI 6625 Optical Wiper Kit 606625 6625 optical wiper kit, 2 pack, for use with YSI 6150, 6136, 6131, & 6132 optical probes
In Stock
YSI 6155 Optical DO Membrane Kit 606155 6155 optical DO membrane kit
In Stock
YSI 600OMS V2 Optical Monitoring Sonde 600-01 600OMS V2 Sonde with temperature/conductivity sensor Usually ships in 3-5 days
YSI 6920 V2-2 Multi-Parameter Water Quality Sonde 6920V2-01 6920 V2-2 Sonde with temperature/conductivity sensor Usually ships in 3-5 days

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