pH/ORP and ORP Testers

  • Displays ORP (pH/ORP – #638-850-04) and temperature.
  • Floating, waterproof casing.
  • Replaceable pH and ORP cartridges.
  • Cloth pH junction is easy to clean in case clogging occurs.
  • Automatic shut-off after 8 minutes of non-use.
  • Automatic temperature compensation for #638-850-04.
  • Automatic 1 or 2-point pH calibration (#638-850-04 only).
  • Battery % level at startup and stability indicator.
  • Supplied with four 1.5 V batteries.
  • Dimensions: 16.3 x 4 x 2.6 cm.

    ORP Range: ±1000 mV
    Accuracy: ±2 mV
    pH Range (#638-850-04 only): -2.00 to 16.00 pH
    Accuracy: ±0.05 pH
    Temperature Range: -5.0 to 60.0°C, 23.0 to 140.0°F
    Accuracy: ±0.5°C/±1°F

Manufacturer : Hanna Instruments

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Cat.#DescriptionMfg.#PriceQuantityEstimated Availability
638-850-02ORP TesterHI 98120$238.00 EA  
Ships in about 2 days
638-850-04pH/ORP TesterHI 98121$241.50 EA  
Ships in about 2 days

Parts & Accessories:

Cat.#DescriptionMfg.#PriceQuantityEstimated Availability
638-850-10Replacement ORP electrode for #638-850-02HI 73120$95.08 EA  
Ships in about 2 days
639-670-10Replacement pH electrode for #638-850-04HI 73127$78.75 EA  
Ships from stock

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