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    อุปกรณ์วัด pH (Easy-Use Basic pH/ORP Benchtop Meter)

    pH 21

    Easy-Use Basic pH/ORP Benchtop Meter

    pH 21 is a basic pH and ORP meter designed for simplicity of use in all applications where fast and efficient daily controls are required. This meter is also suitable for the educational field, where students are often first introduced to measuring instruments.

    This model measures pH in the 0 to 14 range, with 0.01 resolution. In addition, pH 21 can also measure ORP (mV) by using a proper ORP electrode (optional). The pH calibration procedure is automatic and can be performed at one or two points.

    Readings can be manually (MTC) or automatically (ATC) compensated for temperature. The automatic temperature compensation is performed if using the optional HI 7662 temperature probe, while for manual compensation the user can set the temperature value through the arrow keys. The meter is also provided with the HOLD function, which allows to freeze reading on the LCD by simply pressing the HOLD button.


    Range  pH  0.00 to 14.00 pH
    mV  ±1999 mV
    Temperature  0.0 to 100.0°C
    Resolution  pH  0.01 pH
    mV  1 mV
    Temperature  0.1°C
    Accuracy  pH  ±0.02 pH
    mV  ±2 mV
    Temperature  ±1°C
    Temperature Compensation
    manual (adjustable with arrow keys) or automatic from 0 to 100°C (with temperature probe)
    HI 1110B pH electrode (included);
    HI 7662 temperature probe (optional)
    pH Calibration  automatic, 1 or 2 point
    Power Supply  12 Vdc adapter (included)
    Environment  0 to 50°C (32 to 122°F); RH max 95%
    Dimensions  230 x 170 x 75 mm (9.1 x 6.7 x 3.0″)
    Weight  500 g (1.1 lb.)


    HI 1110B  pH Electrode for General Laboratory Use
    BNC Connection
    HI 3131B  Refillable Combination ORP Electrode for Titration and Laboratory Use
    BNC Connection
    HI 7662  Stainless Steel Temperature Probe
    HI 7061L  General Purpose Cleaning Solution
    1 x 500 mL bottle
    HI 5004L  pH 4.01 buffer solution
    HI 5007L  pH 7.01 buffer solution
    HI 5010L  pH 10.01 buffer solution
    HI 70300L  Electrode Storage Solution
    1 x 500 mL bottle
    HI 76405  Electrode Holder with Steel Base

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    Tel.  02-191-3928 Fax 02-191-3929

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

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