ProSolo ODO Optical Dissolved Oxygen Meter

Price$850.00 (US Only)

1 of ProSolo Digital Water Quality Meter


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An evolution of the Professional Series water quality meters, the ProSolo DIGITAL handheld replaces the ProODO as YSI’s most advanced optical dissolved oxygen field meter. Paired with the latest optical DO and temperature (ODO/T) probe, the ProSolo benefits from years of expertise in cutting-edge dissolved oxygen technology.

The ProSolo handheld is the direct replacement for the ProODO Optical Dissolved Oxygen handheld that was discontinued on Dec. 31, 2018.

Choose an ODO/T cable below to complete your sampling system. Pre-assembled ProSolo ODO/T kits are also available.

  • Order Cables
    SKU Description Price Quantity
    627200-1 ODO/T Probe Assembly, 1m $740.00
    627200-4 ODO/T Probe Assembly, 4m $760.00
    627200-10 ODO/T Probe Assembly, 10m $780.00
    627200-20 ODO/T Probe Assembly, 20m $800.00
    627200-30 ODO/T Probe Assembly, 30m $830.00
    627200-50 ODO/T Probe Assembly, 50m $880.00
    627200-100 ODO/T Probe Assembly, 100m $1,020.00
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  • Overview


    ODO® Sensor Technology

    Dissolved oxygen measurement technology has advanced from electrochemical sensors, such as polarographic and galvanic, to luminescent-based, optical sensors. YSI optical DO sensors are non-consumptive, meaning oxygen is not consumed during the measurement. As a result, there is no flow dependence or stirring required with ODO, allowing for the most accurate readings in the field.

    Advantages over electrochemical sensors include:

    • Higher accuracy with no stir dependence
    • Less drift over time; holds calibration longer
    • Less maintenance; no membranes or electrolyte

    ProDIGITAL Smart Sensors

    In addition to utilizing the most advanced DO sensing technology, the ProSolo incorporates smart sensor technology that enables sensors to be automatically recognized by the handheld. Additionally, DIGITAL sensors store calibration data, so probe assemblies can be swapped between handhelds without the need for re-calibration.

    EPA Approved Methodology

    The optical BOD (OBOD) sensor utilizes EPA approved methodology for wastewater compliance reporting of BOD and CBOD, while ODO/T probe assemblies utilize EPA approved methodology for compliance reporting of DO.

    Provides Years of Sampling for All Field Conditions

    The ProSolo handheld meets the demands of true field work with a rugged, waterproof case (IP-67 rated) and a military-spec (MS) cable connector. Rigorously drop tested from all angles, the handheld features a 3-year warranty, while a 2-year warranty is included with the probe assembly and ODO Cap.

    Advanced Data Management

    ProSolo includes KorDSS Software, a powerful data management program for easy 2-way communication between the meter and a PC. A unique data backup feature allows for the export of data to a USB flash drive (included) in csv format without having to connect to a computer.

    Convenient Sampling Experience

    • Ergonomic handheld for a comfortable grip
    • Easy-to-read color display and backlit keypad
    • Large onboard memory with storage capacity for over 100,000 data sets
    • Site ID and Data ID tag capabilities for data organization
    • Data export directly to USB flash drive (included)
    • Single cable design for probe assembly lengths ranging from 1- to 100-meters
    • Long-life rechargeable lithium-ion battery that is user-replaceable
    • Simple and quick calibration procedures

    Do you have an old meter you'd like to trade in for a discount on a new ProSolo ODO/T system? Check out the Pro Series Trade-In Promotion going on now (U.S. only).

    Be the envy of your co-workers by winning a ProSolo ODO/T system! Enter to win a ProSolo optical DO system.

  • Specifications
    ProSolo Specifications  
    Dimensions 8.3 cm width x 21.6 cm length x 5.6 cm depth; 567 g (with battery)

    Rechargeable lithium-ion battery pack provides ~48 hours with the handheld only;

    Battery recharge time is ~ 9 hours with the AC power adapter;

    The instrument can also be powered via AC or external power through the USB port

    Operating Temperature 0 to 50°C
    Storage Temperature

    0 to 45°C with battery installed;

    0 to 60°C without battery installed


    Color, LCD graphic display;

    3.9 cm width x 6.5 cm height

    Memory >100,000 data sets


    Units: mmHg, inHg, mbar, psi,
    kPa, atm

    Range: 375 to 825 mmHg;

    Accuracy: ±1.5 mmHg from 0 to 50°C;

    Resolution: 0.1 mmHg;

    Sites and Data ID

    100 user-defined sites and 100 user-defined data ID tags;

    Site pictures can be sent to the handheld via KorDSS Software

    Calibration Records 400 detailed calibration records can be stored and are available to view, download, and print (printing only available via KorDSS Software)
    Languages English, Spanish, German, French, Italian, Norwegian, Portuguese, Japanese,
    Chinese (Simplified & Traditional), Korean, Thai
    Certifications CEC, CE; RoHS; IP-67; WEEE; FCC; UN Part III, Section 38.3, Test methods for lithium-ion batteries (Class 9)
    Warranty NMEA 0183; requires user-supplied GPS and YSI 6115 Y-cable
    ODO Specifications  
    Size 2.46 cm diameter, cable options for 1, 4, 10, 20, 30, 50, and 100 m lengths

    Dissolved Oxygen

    (Optical luminescence)
    Units: % saturation, % saturation
    local, mg/L, ppm

    Range: 0 to 500%, 0 to 50 mg/L

    Accuracy: 0 to 200%: ±1% of reading or 1% saturation, whichever is greater

    200 to 500%: ±8% of reading

    0 to 20 mg/L: ±0.1 mg/L or 1% of reading, whichever is greater

    20 to 50 mg/L: ±8% of reading

    Resolution: 0.01 mg/L and 0.1%, or 0.1 mg/L and 1% (auto-adjusts based on range)


    Units: °C, °F, K

    Range: -5 to 70°C (temperature compensation range for DO mg/L measurement: -5 to 50°C )

    Accuracy: ±0.2°C

    Resolution: 0.1°C or 0.1°F (auto-adjusts based on range)

    Warranty 2 years on cable, probe, and ODO sensor cap

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