YSI - a Xylem brand  

YSI EXO pH & ORP Sensor Replacement Module

User-replaceable tip for #599705 - EXO guarded pH/ORP sensor

  • Features
  • Specifications
  • Documents

Smart, cost-saving technology for water quality measurements.

Exhaustible reagents are stored in this replaceable module and can be swapped-out as needed. Electronics & data are stored separately in the smart sensor base. Grants long-term costs savings by eliminating the need to re-buy the entire sensor after the reagents are depleted (approximately 12-18 months for pH/ORP, depending on use).


  • NOT for use in EXO2 systems with a central wiper installed.
  • EXO sensors and modules are not backwards compatible with 6-Series sondes.
Depth / Pressure Rating / Limit 250m (820ft)
Desktop Software Compatible KOR for EXO
Digital / Digital Sensors Yes
Equipment used with 599705
Measurement Range pH: 0 to 14 units
ORP: -999 to 999 mV
Precision pH: ±0.1 pH units within ±10°C of calibration temp; ±0.2 pH units for entire temp range
(Within the environmental pH range of pH 4 to pH 10.)
ORP: ±?20 mV in Redox standard solutions
Resolution pH: 0.01 units
ORP: 0.1 mV
Response Time pH: T63<3 sec, ORP: T63<5 sec
Sampling Yes
Smart Sensors / Ports Yes
User Calibratable Yes
User Replaceable Yes
Warranty 1 Year - Replaceable reagent modules for pH/ORP
Waterproof Yes, when installed

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