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    อุปกรณ์วัด Multiparameter (Portable pH/EC/TDS/Temperature Meter High Range EC & TDS)

    HI 991301

    Portable pH/EC/TDS/Temperature Meter High Range EC & TDS

    HI 991301 has been designed to offer you  pH, conductivity, total dissolved solids and temperature measurements all in a slim, lightweight, portable unit. From purified to brine water measurement, you can select the meter which will work best with your range of conductivity for greater precision.

    There are only 2 buttons, yet you can select from a range of calibration buffers and even the temperature scale (°C or °F) most familiar to you. The housing is waterproof and rated for IP 67 conditions.

    The HI 1288 pre-amplified multiparameter probe features an easy to clean sensor and a cloth junction that can be pulled longer to increase the life of the probe. To ensure against interference from transient electrical noise, a solid-state amplifier is integrated into the HI 1288.

    User selectable features include different TDS factors from 0.45 to 1.00 and a range of temperature coefficients (β) from 0.0 to 2.4% for greater consistency and reproducibility. Standardized buffer recognition values are also selectable.

    This instrument easily fits in the palm of your hand and the bottom probe connection ensures the electrode cable doesn’t get in your way. The large, multi-level LCD displays the primary reading, temperature and calibration guides simultaneously.


    Range pH 0.00 to 14.00 pH
    EC 0.00 to 20.00 mS/cm
    TDS 0.00 to 10.00 ppt (g/L)
    Temperature 0.0 to 60.0°C (32.0 to 140.0°F)
    Resolution pH 0.01 pH
    EC 0.01 mS/cm
    TDS 0.01 ppt
    Temperature 0.1°C (0.1°F)
    Accuracy pH ±0.01 pH
    EC ±2% F.S.
    TDS ±2% F.S.
    Temperature ±0.5°C (±1.0°F)
    TDS Conversion Factor  selectable 0.45 to 1.00 with 0.01 increments (default 0.50)
    pH Calibration  automatic, one or two point calibration with two sets of memorized buffers (Standard 4.01, 7.01, 10.01 or NIST 4.01, 6.86, 9.18)
    EC/TDS Calibration  automatic, 1 point at 6.44 ppt (CONV 0.5)
    at 9.02 ppt (CONV 0.7)
    at 12880 µS/cm (others)
    Temperature Compensation pH Automatic
    EC/TDS Automatic with selectable ß from 0.0 to 2.4%/°C with 0.1 increments
    Probe  HI 1288 PVC body, pre-amplified multiparameter probe with internal temperature sensor, DIN connector and 1.2 m (3.93’) cable (included)
    Battery Type / Life  1.5V AAA (3) /approximately 500 hours of continuous use. auto-off after 8 minutes of inactivity
    Environment  0 to 50°C (32 to 122°F); RH max 100%
    Dimensions  152 x 58 x 30 mm (6.0 x 2.3 x 1.2”)
    Weight  205 g (7.2 oz.)


    HI 1288  Preamplified pH and EC Probe
    HI 7004L  4.01 pH Buffer Solution
    1 x 500 mL bottle
    HI 7007L  7.01 pH Buffer Solution
    1 x 500 mL bottle
    HI 7010L  10.01 pH Buffer Solution
    1 x 500 mL bottle
    HI 7030L  12880 µS/cm EC Solution, 500 mL Bottle
    HI 7031L  1413 µS/cm EC Solution, 500 mL Bottle
    HI 7032L  1382 mg/L (ppm) TDS Bottle, 500 mL Bottle
    HI 70442L  1500 mg/L (ppm) TDS Solution, 500 mL Bottle
    HI 70300L  Electrode Storage Solution
    1 x 500 mL bottle
    HI 7061L  General Purpose Cleaning Solution
    1 x 500 mL bottle
    HI 710023  Shockproof Rubber Boot
    Streamlined Style Casing, Orange
    HI 710024  Shockproof Rubber Boot
    Streamlined Style Casing, Blue

  • 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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