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    อุปกรณ์วัด pH (Combo pH/ORP/Temperature Tester)

    HI 98121

    Combo pH/ORP/Temperature Tester

    HI 98121 is a waterproof meter that measures pH, ORP and temperature. The housing of this tester has been completely sealed against humidity and are designed to float.

    Electrode replacement with the stainless steel round connector means there are no pins to bend or break during replacement.

    When the cloth junction becomes clogged and response time is sluggish, simply pull out 3 mm (1/8”) to clear the clogging which will improve response time and stability.

    The exposed stainless steel temperature sensor on these models facilitates faster and more accurate temperature measurement.


    Range  ORP  ±1000 mV
    pH  -2.00 to 16.00 pH
    Temperature  -5.0 to 60.0°C / 23.0 to 140.0°F
    Resolution  ORP  1 mV
    pH  0.01 pH
    Temperature  0.1°C / 0.1°F
    Accuracy  ORP  ±2 mV
    pH  ±0.05 pH
    Temperature  ±0.5°C / ±1°F
    Calibration  ORP
    factory calibrated  pH  automatic, one or two points with two sets of memorized buffers (pH 4.01 / 7.01 / 10.01 or 4.01 / 6.86 / 9.18)
    Automatic for pH readings
    Electrode  HI 73127 replaceable pH electrode (included); fixed ORP sensor
    Battery Type / Life  1.5V (4) / approximately 250 hours of continuous use; auto-off after 8 minutes of non-use
    Environment  -5 to 50°C (23 to 122°F); RH max 100%
    Dimensions  163 x 40 x 26 mm (6.4 x 1.6 x 1.0″)
    Weight  100 g (3.5 oz.)


    HI 73127  Spare Electrode for Testers
    HI 7004M  4.01 pH Buffer Solution
    HI 7007M  7.01 pH Buffer Solution
    1 x 230 mL bottle
    HI 7010M  10.01 pH Buffer Solution
    1 x 230 mL bottle
    HI 7021M  ORP Test Solution at 240 mV (@20°C)
    1 x 230 mL bottle
    HI 7022M  ORP Test Solution at 470 mV (@20°C)
    1 x 230 mL bottle
    HI 70300L  Electrode Storage Solution
    1 x 500 mL bottle
    HI 73128  Tool for Replacing Probe

  • Requesting a Quotation and Ordering Products

    131 Thailand Science Park. Innovation Cluster 1 Building,

    Klong 1, Klong Luang, Pathumthani 12120 Thailand. 

    Tel.  02-191-3928 Fax 02-191-3929

    For more information please contact 081-847-6768 (Ms. Nareerat) IDLine: @alltestkit

    E-mail :


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